iGrip ST & SS · Installation guide

Snowmobile
stud guide.
Safety first.

Choose and install iGrip ST & SS studs.

Match your snowmobile track model, lug height and prepared holes to the right screw-in studs. Find quantities, drilling dimensions and installation patterns for a wide range of track variants.

Find my track ↓

By iGrip · Updated 13 October 2026

Snowmobile rider on an icy winter trail with iGrip — CONFIDENCE STARTS
WITH THE RIGHT GRIP.

01 / START HERE

Which studs fit
your track?

Choose your track and lug height, then select the model code to see its stud quantities and dimensions. Variants with factory-prepared holes have their own fitting instructions.

1 Track & lug height

2 Exact model optional

Track not listed? ↗

Before you install

Check the location of your tunnel protectors. Our patterns are recommendations: do not install studs directly beneath the tunnel protectors. We recommend fitting tunnel protectors.

YOUR TRACK GUIDE

Backcountry

Change track ↑

Recommended studs: ST-24R; SS-28R for softer or SS-32R for stiffer lugs
Pilot hole · diameter × depth: 3/32″ × 3/4″ (Ø 2.38 mm × 19.05 mm)
Pattern repeats: Every 6 rows

Backcountry: stud insertion depth. Protrusion above rubber; Insertion into rubber — Stud insertion depth · applies to the Backcountry variants below

Backcountry 1.75″

Backcountry: stud placement pattern. Pattern 4–2–4–2–5–2 — Stud positions · match the exact pattern to your track

Track dimensions and stud quantities
Model	Length	Width	Lug height	Pitch	Rows	Studs (pcs.)
9140C	121″ (3 073.4 mm)	15″ (381 mm)	1.75″ (44.45 mm)	2.52″ (64.01 mm)	48	152
9141C	128″ (3 251.2 mm)	15″ (381 mm)	1.75″ (44.45 mm)	2.52″ (64.01 mm)	51	162
9142C	136″ (3 454.4 mm)	15″ (381 mm)	1.75″ (44.45 mm)	2.52″ (64.01 mm)	54	171
9143C	144″ (3 657.6 mm)	15″ (381 mm)	1.75″ (44.45 mm)	2.52″ (64.01 mm)	57	181

Backcountry X 1.75″

Backcountry: stud placement pattern. Pattern 2–4–3–5–3–6 — Stud positions · match the exact pattern to your track

Track dimensions and stud quantities
Model	Length	Width	Lug height	Pitch	Rows	Studs (pcs.)
9254C	141″ (3 581.4 mm)	15″ (381 mm)	1.75″ (44.45 mm)	3″ (76.2 mm)	47	180
9287C	120″ (3 048 mm)	15″ (381 mm)	1.75″ (44.45 mm)	2.86″ (72.64 mm)	42	161
9288C	129″ (3 276.6 mm)	15″ (381 mm)	1.75″ (44.45 mm)	2.86″ (72.64 mm)	45	172
9289C	137″ (3 479.8 mm)	15″ (381 mm)	1.75″ (44.45 mm)	2.86″ (72.64 mm)	48	184
9328C	153″ (3 886.2 mm)	15″ (381 mm)	1.75″ (44.45 mm)	3″ (76.2 mm)	51	195

Backcountry X2 2″

Backcountry: stud placement pattern. Pattern 2–4–2–4–2 — Stud positions · match the exact pattern to your track

Track dimensions and stud quantities
Model	Length	Width	Lug height	Pitch	Rows	Studs (pcs.)
9258C	137″ (3 479.8 mm)	15″ (381 mm)	2″ (50.8 mm)	2.86″ (72.64 mm)	48	144
9417C	146″ (3 708.4 mm)	15″ (381 mm)	2″ (50.8 mm)	2.86″ (72.64 mm)	51	153

Dimensions are shown in inches and millimetres.

Shop snowmobile studs ↗Follow the installation steps ↓

YOUR TRACK GUIDE

Charger 1.5″ · prepared holes

Change track ↑

Recommended studs: ST-25R; SS-28R or SS-32R depending on lug stiffness
Pilot hole · diameter × depth: Use the prepared holes; no additional drilling is specified
Pattern repeats: Every 6 rows

Placement pattern & track dimensions

Charger 1.5″ · prepared holes: stud insertion depth. Protrusion above rubber; Insertion into rubber — Stud insertion depth · grey area = track rubber

Charger 1.5″ · prepared holes: stud placement pattern. Pattern 6–4–6–3 — Stud positions · match the exact pattern to your track

Track dimensions and stud quantities
Model	Length	Width	Lug height	Pitch	Rows	Studs (pcs.)
CHARGER	154″ (3 911.6 mm)	16″ (406.4 mm)	1.5″ (38.1 mm)	2.86″ (72.64 mm)	54	198

Dimensions are shown in inches and millimetres.

Shop snowmobile studs ↗Follow the installation steps ↓

YOUR TRACK GUIDE

Cobra 1.352″

Change track ↑

Recommended studs: ST-19R
Pilot hole · diameter × depth: 3/32″ × 1/2″ (Ø 2.38 mm × 12.70 mm)
Pattern repeats: Every 3 rows

Narrow, flexible tread lugs. SS models are not recommended.

Placement pattern & track dimensions

Cobra 1.352″: stud insertion depth. Protrusion above rubber; Insertion into rubber — Stud insertion depth · grey area = track rubber

Cobra 1.352″: stud placement pattern — Stud positions · match the exact pattern to your track

Track dimensions and stud quantities
Model	Length	Width	Lug height	Pitch	Rows	Studs: 4–6–4 (pcs.)
9052H	121″ (3 073.4 mm)	15″ (381 mm)	1.352″ (34.34 mm)	2.52″ (64.01 mm)	48	224
9061H	136″ (3 454.4 mm)	15″ (381 mm)	1.352″ (34.34 mm)	2.52″ (64.01 mm)	54	252
9107H	144″ (3 657.6 mm)	15″ (381 mm)	1.352″ (34.34 mm)	2.52″ (64.01 mm)	57	266
9120H	146″ (3 708.4 mm)	15″ (381 mm)	1.352″ (34.34 mm)	2.86″ (72.64 mm)	51	238
9235H	129″ (3 276.6 mm)	15″ (381 mm)	1.352″ (34.34 mm)	2.86″ (72.64 mm)	45	210
9284H	120″ (3 048 mm)	15″ (381 mm)	1.352″ (34.34 mm)	2.86″ (72.64 mm)	42	196
9307H	137″ (3 479.8 mm)	15″ (381 mm)	1.352″ (34.34 mm)	2.86″ (72.64 mm)	48	224

Dimensions are shown in inches and millimetres.

Shop snowmobile studs ↗Follow the installation steps ↓

YOUR TRACK GUIDE

Cobra SWT 1.5″ · prepared holes

Change track ↑

Recommended studs: ST-25R; SS-28R or SS-32R depending on lug stiffness
Pilot hole · diameter × depth: Use the prepared holes; no additional drilling is specified
Pattern repeats: Every 6 rows

Placement pattern & track dimensions

Cobra SWT 1.5″ · prepared holes: stud insertion depth. Protrusion above rubber; Insertion into rubber — Stud insertion depth · grey area = track rubber

Cobra SWT 1.5″ · prepared holes: stud placement pattern. Factory-prepared holes — Stud positions · match the exact pattern to your track

Track dimensions and stud quantities
Model	Length	Width	Lug height	Pitch	Rows	Studs (pcs.)
9422U	154″ (3 911.6 mm)	24″ (609.6 mm)	1.5″ (38.1 mm)	2.86″ (72.64 mm)	54	216

Dimensions are shown in inches and millimetres.

Shop snowmobile studs ↗Follow the installation steps ↓

YOUR TRACK GUIDE

Cobra SWT 1.5–1.75″

Change track ↑

Recommended studs: ST-24R; SS-28R or SS-32R depending on lug stiffness
Pilot hole · diameter × depth: 3/32″ × 3/4″ (Ø 2.38 mm × 19.05 mm)
Pattern repeats: Every 6 rows

Placement pattern & track dimensions

Cobra SWT 1.5–1.75″: stud insertion depth. Protrusion above rubber; Insertion into rubber — Stud insertion depth · grey area = track rubber

Cobra SWT 1.5–1.75″: stud placement pattern — Stud positions · match the exact pattern to your track

Track dimensions and stud quantities
Model	Length	Width	Lug height	Pitch	Rows	Studs (pcs.)
9261U	156″ (3 962.4 mm)	24″ (609.6 mm)	1.5″ (38.1 mm)	2.52″ (64.01 mm)	62	248
9260U	156″ (3 962.4 mm)	24″ (609.6 mm)	1.75″ (44.45 mm)	2.52″ (64.01 mm)	62	248

Dimensions are shown in inches and millimetres.

Shop snowmobile studs ↗Follow the installation steps ↓

YOUR TRACK GUIDE

Cobra WT 1.5″ · prepared holes

Change track ↑

Recommended studs: ST-25R; SS-28R or SS-32R depending on lug stiffness
Pilot hole · diameter × depth: Use the prepared holes; no additional drilling is specified
Pattern repeats: Every 6 rows

Placement pattern & track dimensions

Cobra WT 1.5″ · prepared holes: stud insertion depth. Protrusion above rubber; Insertion into rubber — Stud insertion depth · grey area = track rubber

Cobra WT 1.5″ · prepared holes: stud placement pattern. Factory-prepared holes — Stud positions · match the exact pattern to your track

Track dimensions and stud quantities
Model	Length	Width	Lug height	Pitch	Rows	Studs (pcs.)
9366U	154″ (3 911.6 mm)	20″ (508 mm)	1.5″ (38.1 mm)	2.86″ (72.64 mm)	54	198
9414U	154″ (3 911.6 mm)	20″ (508 mm)	1.5″ (38.1 mm)	2.86″ (72.64 mm)	54	198

Dimensions are shown in inches and millimetres.

Shop snowmobile studs ↗Follow the installation steps ↓

YOUR TRACK GUIDE

Cobra WT 1.5–1.8″

Change track ↑

Recommended studs: ST-24R; SS-28R or SS-32R depending on lug stiffness
Pilot hole · diameter × depth: 3/32″ × 3/4″ (Ø 2.38 mm × 19.05 mm)
Pattern repeats: Every 3 rows

This variant covers 1.5–1.8″ lugs, even where the name is abbreviated to Cobra WT 1.5″.

Placement pattern & track dimensions

Cobra WT 1.5–1.8″: stud insertion depth. Protrusion above rubber; Insertion into rubber — Stud insertion depth · grey area = track rubber

Cobra WT 1.5–1.8″: stud placement pattern — Stud positions · match the exact pattern to your track

Track dimensions and stud quantities
Model	Length	Width	Lug height	Pitch	Rows	Studs (pcs.)
9196U	154″ (3 911.6 mm)	20″ (508 mm)	1.5″ (38.1 mm)	2.86″ (72.64 mm)	54	198
9322U	154″ (3 911.6 mm)	20″ (508 mm)	1.5″ (38.1 mm)	2.86″ (72.64 mm)	54	198
9195U	154″ (3 911.6 mm)	20″ (508 mm)	1.8″ (45.72 mm)	2.86″ (72.64 mm)	54	198

Dimensions are shown in inches and millimetres.

Shop snowmobile studs ↗Follow the installation steps ↓

YOUR TRACK GUIDE

Cobra 1.6″ · prepared holes

Change track ↑

Recommended studs: ST-25R; SS-28R or SS-32R depending on lug stiffness
Pilot hole · diameter × depth: For additional ST-19R: 3/32″ × 1/2″ (Ø 2.38 mm × 12.70 mm)
Pattern repeats: Every 6 rows

Green dots in the pattern indicate additional ST-19R studs. Use the separate drilling dimensions shown above for these additional studs.

Placement pattern & track dimensions

Cobra 1.6″ · prepared holes: stud insertion depth. Protrusion above rubber; Insertion into rubber — Stud insertion depth · grey area = track rubber

Cobra 1.6″ · prepared holes: stud placement pattern. Factory-prepared holes — Stud positions · match the exact pattern to your track

Track dimensions and stud quantities
Model	Length	Width	Lug height	Pitch	Rows	Studs (pcs.)	Additional ST-19R (green dots), pcs.
9244C	120″ (3 048 mm)	15″ (381 mm)	1.6″ (40.64 mm)	2.86″ (72.64 mm)	42	91	70
9245C	129″ (3 276.6 mm)	15″ (381 mm)	1.6″ (40.64 mm)	2.86″ (72.64 mm)	45	97	75
9246C/9264C	137″ (3 479.8 mm)	15″ (381 mm)	1.6″ (40.64 mm)	2.86″ (72.64 mm)	48	104	80
9247C	146″ (3 708.4 mm)	15″ (381 mm)	1.6″ (40.64 mm)	2.86″ (72.64 mm)	51	110	85
9249C	137″ (3 479.8 mm)	16″ (406.4 mm)	1.6″ (40.64 mm)	2.86″ (72.64 mm)	48	104	80
9250C	146″ (3 708.4 mm)	16″ (406.4 mm)	1.6″ (40.64 mm)	2.86″ (72.64 mm)	51	110	85
9272C/9282C	154″ (3 911.6 mm)	16″ (406.4 mm)	1.6″ (40.64 mm)	2.86″ (72.64 mm)	54	117	90
9273C	154″ (3 911.6 mm)	15″ (381 mm)	1.6″ (40.64 mm)	2.86″ (72.64 mm)	54	117	90

Dimensions are shown in inches and millimetres.

Shop snowmobile studs ↗Follow the installation steps ↓

YOUR TRACK GUIDE

Hacksaw · prepared holes

Change track ↑

Recommended studs: ST-18R
Pilot hole · diameter × depth: Use the prepared holes; no additional drilling is specified
Pattern repeats: Every 3 rows

Placement pattern & track dimensions

Hacksaw · prepared holes: stud insertion depth. Protrusion above rubber; Insertion into rubber — Stud insertion depth · grey area = track rubber

Hacksaw · prepared holes: stud placement pattern — Stud positions · match the exact pattern to your track

Track dimensions and stud quantities
Model	Length	Width	Lug height	Pitch	Rows	Studs: 4–4–2 (pcs.)
9010H	136″ (3 454.4 mm)	15″ (381 mm)	1″ (25.4 mm)	2.52″ (64.01 mm)	54	180
9043H144	121″ (3 073.4 mm)	15″ (381 mm)	1″ (25.4 mm)	2.52″ (64.01 mm)	48	160
9110H	128″ (3 251.2 mm)	14″ (355.6 mm)	1″ (25.4 mm)	2.52″ (64.01 mm)	51	170
9234H	128″ (3 251.2 mm)	15″ (381 mm)	1″ (25.4 mm)	2.52″ (64.01 mm)	51	170

Dimensions are shown in inches and millimetres.

Shop snowmobile studs ↗Follow the installation steps ↓

YOUR TRACK GUIDE

Hurricane 175

Change track ↑

Recommended studs: ST-24R; SS-28R or SS-32R depending on lug stiffness
Pilot hole · diameter × depth: 3/32″ × 3/4″ (Ø 2.38 mm × 19.05 mm)
Pattern repeats: Every 6 rows

Placement pattern & track dimensions

Hurricane 175: stud insertion depth. Protrusion above rubber; Insertion into rubber — Stud insertion depth · grey area = track rubber

Hurricane 175: stud placement pattern — Stud positions · match the exact pattern to your track

Track dimensions and stud quantities
Model	Length	Width	Lug height	Pitch	Rows	Studs: 4–4–4 (pcs.)
9400C	120″ (3 048 mm)	15″ (381 mm)	1.75″ (44.45 mm)	2.86″ (72.64 mm)	42	168
9401C	129″ (3 276.6 mm)	15″ (381 mm)	1.75″ (44.45 mm)	2.86″ (72.64 mm)	45	180
9402C	137″ (3 479.8 mm)	15″ (381 mm)	1.75″ (44.45 mm)	2.86″ (72.64 mm)	48	192
9403C	146″ (3 708.4 mm)	15″ (381 mm)	1.75″ (44.45 mm)	2.86″ (72.64 mm)	51	204

Dimensions are shown in inches and millimetres.

Shop snowmobile studs ↗Follow the installation steps ↓

YOUR TRACK GUIDE

Ripsaw 1″

Change track ↑

Recommended studs: ST-20R
Pilot hole · diameter × depth: 3/32″ × 5/8″ (Ø 2.38 mm × 15.88 mm)
Pattern repeats: Every 3 rows

Bombardier Gen4 and Gen5: do not place studs in the centre of the track if tunnel protection is fitted at the front and centre.

Placement pattern & track dimensions

Ripsaw 1″: stud insertion depth. Protrusion above rubber; Insertion into rubber — Stud insertion depth · grey area = track rubber

Ripsaw 1″: stud placement pattern. Pattern 4–4–4; Full pattern — Stud positions · match the exact pattern to your track

Track dimensions and stud quantities
Model	Length	Width	Lug height	Pitch	Rows	Studs: 4–4–4 (pcs.)	Studs: 4–5–4 (green dots), pcs.
9148H	120″ (3 048 mm)	15″ (381 mm)	1″ (25.4 mm)	2.86″ (72.64 mm)	42	168	182

Dimensions are shown in inches and millimetres.

Shop snowmobile studs ↗Follow the installation steps ↓

YOUR TRACK GUIDE

Ripsaw 1.25″

Change track ↑

Recommended studs: ST-24R or SS-28R
Pilot hole · diameter × depth: 3/32″ × 3/4″ (Ø 2.38 mm × 19.05 mm)
Pattern repeats: Every 3 rows

Stiff tread lugs. Bombardier Gen4 and Gen5: do not place studs in the centre of the track if tunnel protection is fitted at the front and centre.

Placement pattern & track dimensions

Ripsaw 1.25″: stud insertion depth. Protrusion above rubber; Insertion into rubber — Stud insertion depth · grey area = track rubber

Ripsaw 1.25″: stud placement pattern. Pattern 4–4–4; Full pattern — Stud positions · match the exact pattern to your track

Track dimensions and stud quantities
Model	Length	Width	Lug height	Pitch	Rows	Studs: 4–4–4 (pcs.)	Studs: 4–5–4 (green dots), pcs.
9001H	128″ (3 251.2 mm)	13.5″ (342.9 mm)	1.25″ (31.75 mm)	2.52″ (64.01 mm)	51	204	221
9006H	144″ (3 657.6 mm)	15″ (381 mm)	1.25″ (31.75 mm)	2.52″ (64.01 mm)	57	228	247
9007H	151″ (3 835.4 mm)	15″ (381 mm)	1.25″ (31.75 mm)	2.52″ (64.01 mm)	60	240	260
9040H	128″ (3 251.2 mm)	15″ (381 mm)	1.25″ (31.75 mm)	2.52″ (64.01 mm)	51	204	221
9149H	120″ (3 048 mm)	15″ (381 mm)	1.25″ (31.75 mm)	2.86″ (72.64 mm)	42	168	182
9419H	120″ (3 048 mm)	15″ (381 mm)	1.25″ (31.75 mm)	2.86″ (72.64 mm)	42	168	182
9968H	121″ (3 073.4 mm)	15″ (381 mm)	1.25″ (31.75 mm)	2.52″ (64.01 mm)	48	192	208
9968H144	121″ (3 073.4 mm)	15″ (381 mm)	1.25″ (31.75 mm)	2.52″ (64.01 mm)	48	192	208
9969H	136″ (3 454.4 mm)	15″ (381 mm)	1.25″ (31.75 mm)	2.52″ (64.01 mm)	54	216	234

Dimensions are shown in inches and millimetres.

Shop snowmobile studs ↗Follow the installation steps ↓

YOUR TRACK GUIDE

Ripsaw II 1–1.25″

Change track ↑

Recommended studs: ST-19R
Pilot hole · diameter × depth: 3/32″ × 1/2″ (Ø 2.38 mm × 12.70 mm)
Pattern repeats: Every 3 rows

Narrow, flexible lugs: SS models are not recommended. Check stud insertion depth regularly and adjust to the pattern if necessary.

The listed width for model 9237H is 1.25″ (31.75 mm) and needs confirmation. Contact us to confirm this dimension before choosing studs.

Placement pattern & track dimensions

Ripsaw II 1–1.25″: stud insertion depth. Protrusion above rubber; Insertion into rubber — Stud insertion depth · grey area = track rubber

Ripsaw II 1–1.25″: stud placement pattern. Pattern 4–6–4; Full pattern — Stud positions · match the exact pattern to your track

Track dimensions and stud quantities
Model	Length	Width	Lug height	Pitch	Rows	Studs: 4–6–4 (pcs.)	Studs: full pattern (green dots), pcs.
9158H	120″ (3 048 mm)	15″ (381 mm)	1″ (25.4 mm)	2.86″ (72.64 mm)	42	196	252
9209H	120″ (3 048 mm)	15″ (381 mm)	1.25″ (31.75 mm)	2.86″ (72.64 mm)	42	196	252
9214H	121″ (3 073.4 mm)	15″ (381 mm)	1.25″ (31.75 mm)	2.52″ (64.01 mm)	48	224	288
9215H	128″ (3 251.2 mm)	15″ (381 mm)	1.25″ (31.75 mm)	2.52″ (64.01 mm)	51	238	306
9216H	136″ (3 454.4 mm)	15″ (381 mm)	1.25″ (31.75 mm)	2.52″ (64.01 mm)	54	252	324
9223H	137″ (3 479.8 mm)	15″ (381 mm)	1.25″ (31.75 mm)	2.86″ (72.64 mm)	48	224	288
9224H	137″ (3 479.8 mm)	15″ (381 mm)	1″ (25.4 mm)	2.86″ (72.64 mm)	48	224	288
9237H	129″ (3 276.6 mm)	1.25″ (31.75 mm)	1.25″ (31.75 mm)	2.86″ (72.64 mm)	45	210	270
9325H	129″ (3 276.6 mm)	15″ (381 mm)	1″ (25.4 mm)	2.86″ (72.64 mm)	45	210	270

Dimensions are shown in inches and millimetres.

Shop snowmobile studs ↗Follow the installation steps ↓

YOUR TRACK GUIDE

Ripsaw II 1.5″

Change track ↑

Recommended studs: ST-19R
Pilot hole · diameter × depth: 3/32″ × 1/2″ (Ø 2.38 mm × 12.70 mm)
Pattern repeats: Every 3 rows

Narrow, flexible lugs: SS models are not recommended. Check stud insertion depth regularly and adjust to the pattern if necessary.

Placement pattern & track dimensions

Ripsaw II 1.5″: stud insertion depth. Protrusion above rubber; Insertion into rubber — Stud insertion depth · grey area = track rubber

Ripsaw II 1.5″: stud placement pattern — Stud positions · match the exact pattern to your track

Track dimensions and stud quantities
Model	Length	Width	Lug height	Pitch	Rows	Studs (pcs.)
9304C	120″ (3 048 mm)	15″ (381 mm)	1.5″ (38.1 mm)	2.86″ (72.64 mm)	42	182
9305C	129″ (3 276.6 mm)	15″ (381 mm)	1.5″ (38.1 mm)	2.86″ (72.64 mm)	45	195
9306C	137″ (3 479.8 mm)	15″ (381 mm)	1.5″ (38.1 mm)	2.86″ (72.64 mm)	48	208

Dimensions are shown in inches and millimetres.

Shop snowmobile studs ↗Follow the installation steps ↓

YOUR TRACK GUIDE

Silent Drive II 1.25″ · prepared holes

Change track ↑

Recommended studs: ST-18R
Pilot hole · diameter × depth: Use the prepared holes; no additional drilling is specified
Pattern repeats: Every 3 rows

Bombardier Gen4 and Gen5: do not place studs in the centre of the track if tunnel protection is fitted at the front and centre.

Placement pattern & track dimensions

Silent Drive II 1.25″ · prepared holes: stud insertion depth. Protrusion above rubber; Insertion into rubber — Stud insertion depth · grey area = track rubber

Silent Drive II 1.25″ · prepared holes: stud placement pattern — Stud positions · match the exact pattern to your track

Track dimensions and stud quantities
Model	Length	Width	Lug height	Pitch	Rows	Studs: 2–4–4 (pcs.)
SILENT DRIVE II	137″ (3 479.8 mm)	15″ (381 mm)	1.25″ (31.75 mm)	2.86″ (72.64 mm)	48	160

Dimensions are shown in inches and millimetres.

Shop snowmobile studs ↗Follow the installation steps ↓

YOUR TRACK GUIDE

Storm 150

Change track ↑

Recommended studs: ST-24R or SS-28R
Pilot hole · diameter × depth: 3/32″ × 3/4″ (Ø 2.38 mm × 19.05 mm)
Pattern repeats: Every 3 rows

The centre lugs are 1.5″ (38.10 mm) high; the outer lugs are 1.25″ (31.75 mm) high.

Placement pattern & track dimensions

Storm 150: stud insertion depth. Protrusion above rubber; Insertion into rubber — Stud insertion depth · grey area = track rubber

Storm 150: stud placement pattern. Pattern 4–2–3; Full pattern 7–4–4 — Stud positions · match the exact pattern to your track

Track dimensions and stud quantities
Model	Length	Width	Lug height	Pitch	Rows	Studs: 4–2–3 (pcs.)	Studs: 7–4–4 (green dots), pcs.
9368H	120″ (3 048 mm)	15″ (381 mm)	1.5″ (38.1 mm)	2.86″ (72.64 mm)	42	126	210
9369H	129″ (3 276.6 mm)	15″ (381 mm)	1.5″ (38.1 mm)	2.86″ (72.64 mm)	45	135	225
9370H	137″ (3 479.8 mm)	15″ (381 mm)	1.5″ (38.1 mm)	2.86″ (72.64 mm)	48	144	240
9371H	146″ (3 708.4 mm)	15″ (381 mm)	1.5″ (38.1 mm)	2.86″ (72.64 mm)	51	153	255

Dimensions are shown in inches and millimetres.

Shop snowmobile studs ↗Follow the installation steps ↓

Drill-size reference: 3/32″ = 2.38125 mm; 1/2″ = 12.70 mm; 5/8″ = 15.875 mm; 3/4″ = 19.05 mm. Millimetre values are for comparison, not instructions to replace the iGrip drill bit with another size.

WHY IGRIP

Why choose
snowmobile studs?

Snowmobile track studs add grip on ice and hard-packed surfaces. A compatible stud setup can improve traction and control; the benefit depends on the surface and riding conditions.

Less spin. Better fuel efficiency.

When less power is lost to track spin on slippery surfaces, fuel use may fall. The benefit depends on the surface, snowmobile setup and riding style.

Turn traction into speed.

Better grip can improve acceleration and achievable speed when traction is the limiting factor, putting more power into forward motion.

More stable cornering.

A more secure hold on icy surfaces helps your snowmobile feel more stable and predictable, especially through corners.

An edge over unstudded tracks.

On ice, the extra bite gives you a traction advantage over a comparable snowmobile running an unstudded track.

An investment in every ride.

We believe dependable grip is one of the best investments you can make in your snowmobile — for control, confidence and performance.

A wide choice for your track.

Our ST and SS range offers different stud lengths and designs for different tracks. Use the finder to match the right studs to your exact variant.

Find the right studs for my track ↑

02 / CHOOSE YOUR STUD

ST vs SS:
which studs fit?

ST studs suit trail riding, corners and ice; SS studs are designed for more aggressive riding. Track compatibility comes first: follow the recommendation for your exact variant.

VERSATILE GRIP

ST series

We recommend ST studs for trails, corners and icy surfaces.

ST-20R ↗ST-24R ↗ST-25R ↗

MORE AGGRESSIVE RIDING

SS series

We designed SS studs for more aggressive riding on trails and ice.

SS-28R ↗SS-32R ↗

Cobra 1.352″ and Ripsaw II: their narrow, flexible lugs require ST-19R. We do not recommend SS models for these variants.

03 / PLAN YOUR QUANTITY

How many studs
do you need?

The number of studs depends on your track model and placement pattern. Use the quantities in your selected track table. For a repeating pattern, the calculator counts complete repetitions and any remaining rows.

Length ÷ pitch ≈ rows

Pitch is the distance between repeating track rows. Use the same units for length and pitch.

137″ ÷ 2.86″ ≈ 48 rows

3 479.8 mm ÷ 72.644 mm ≈ 48 rows.

Rows × average studs per row

48 rows × 4 studs = 192 studs.
For a 5–4–4 pattern: (5 + 4 + 4) ÷ 3 = 4⅓, so 48 × 4⅓ = 208 studs.

Do not round 4⅓ down to 4.3. For patterns that do not divide evenly, count complete repetitions and the remaining rows.

View the complete row-count table +

Track row count by length and pitch
Track length	Pitch 2.52″ (64.01 mm)	Pitch 2.86″ (72.64 mm)	Pitch 3.00″ (76.2 mm)	Pitch 3.50″ (88.9 mm)
120″ (3 048 mm)		42
121″ (3 073.4 mm)	48
128″ (3 251.2 mm)	51
129″ (3 276.6 mm)		45
136″ (3 454.4 mm)	54
137″ (3 479.8 mm)		48
141″ (3 581.4 mm)			47
144″ (3 657.6 mm)	57
146″ (3 708.4 mm)		51
151″ (3 835.4 mm)	60
153″ (3 886.2 mm)			51
154″ (3 911.6 mm)		54
154″ (3 911.6 mm)				44
156″ (3 962.4 mm)			52
162″ (4 114.8 mm)			54
163″ (4 140.2 mm)		57
165″ (4 191 mm)				47
174″ (4 419.6 mm)			58
175″ (4 445 mm)				50

04 / INSTALL WITH CONFIDENCE

How to install
snowmobile studs.

Follow these six steps with the placement diagram for your selected track. Check pilot-hole depth, stud insertion depth and protrusion separately: they are different measurements.

01
Identify your track
Check the exact model, lug height and whether holes are already prepared.
02
Choose the stud & pattern
Consider the stiffness of the track lugs and whether the pattern repeats every 3 or 6 rows.
03
Mark the positions
Check their position relative to the tunnel protectors.
04
Prepare the holes
Do not apply one drilling depth to all tracks. For variants with prepared holes, follow their separate section.
05
Screw in the studs
The grey area represents rubber. Distinguish stud insertion depth from protrusion above the rubber: neither is the same as the pilot-hole drilling depth.
06
Inspect & maintain
Inspect the complete pattern and stud positions. For Ripsaw II, regularly check the insertion depth. If necessary, screw the studs in further to the position shown in the track diagram.

iGrip studs installed in raised snowmobile track lugs — Fit the studs in the positions and to the depth shown for your track.

Snowmobile stud installation & maintenance YouTube ↗

Bombardier Gen4 & Gen5: for Ripsaw 1″, Ripsaw 1.25″ and Silent Drive II 1.25″, do not place studs in the centre of the track when tunnel protection is fitted at the front and centre.

05 / REAL-WORLD EXPERIENCE

Snowmobile videos
& rider experience.

See iGrip studs in use and hear a snowmobile rider’s experience. For fitting instructions, use the installation steps and the diagram for your exact track.

A RIDER’S EXPERIENCE

How long can
iGrip studs last?

Properly installed iGrip studs can last for the entire lifespan of your snowmobile. They are durable, highly resistant to wear and remain firmly secured in the track.

Hear from one of our customers, a passionate snowmobile enthusiast.

Snowmobile stud
questions, answered.

Do I need to drill my snowmobile track before fitting studs?+

Not every track needs drilling. Some variants have factory-prepared holes. Select the exact variant in the track finder and follow its drilling instructions. Cobra 1.6″ has separate drilling dimensions for additional ST-19R studs.

What do the green dots in the stud placement diagrams mean?+

The meaning depends on the track. On Cobra 1.6″, green dots identify additional ST-19R studs. Other track tables use green dots for an alternative or full pattern. Read the quantity column labels before combining or comparing stud counts.

What is the difference between drilling depth, insertion depth and protrusion?+

Drilling depth is the depth of the pilot hole. Insertion depth is the length of the stud inside the rubber. Protrusion is the part above the rubber. These measurements are not interchangeable: follow both the drilling specification and the stud illustration for your selected track.

NEED A HAND?

Can’t find
your track?

Do not select a pattern just because a track name looks similar. Send us the details and we’ll help you identify the right setup.

Ask iGrip for help ↗

info@igripstud.eu

Include these details

Exact track model and photos
Track length, width, pitch and lug height
Snowmobile model
Whether tunnel protectors are fitted
Whether the track has factory-prepared holes

Snowmobilestud guide.Safety first.

Which studs fityour track?

A guide that fits your track.

Backcountry

Backcountry 1.75″

Backcountry X 1.75″

Backcountry X2 2″

Charger 1.5″ · prepared holes

Placement pattern & track dimensions

Cobra 1.352″

Placement pattern & track dimensions

Cobra SWT 1.5″ · prepared holes

Placement pattern & track dimensions

Cobra SWT 1.5–1.75″

Placement pattern & track dimensions

Cobra WT 1.5″ · prepared holes

Placement pattern & track dimensions

Cobra WT 1.5–1.8″

Placement pattern & track dimensions

Cobra 1.6″ · prepared holes

Placement pattern & track dimensions

Hacksaw · prepared holes

Placement pattern & track dimensions

Hurricane 175

Placement pattern & track dimensions

Ripsaw 1″

Placement pattern & track dimensions

Ripsaw 1.25″

Placement pattern & track dimensions

Ripsaw II 1–1.25″

Placement pattern & track dimensions

Ripsaw II 1.5″

Placement pattern & track dimensions

Silent Drive II 1.25″ · prepared holes

Placement pattern & track dimensions

Storm 150

Placement pattern & track dimensions

Why choosesnowmobile studs?

Less spin. Better fuel efficiency.

Turn traction into speed.

More stable cornering.

An edge over unstudded tracks.

An investment in every ride.

A wide choice for your track.

ST vs SS:which studs fit?

ST series

SS series

How many studsdo you need?

Length ÷ pitch ≈ rows

Rows × average studs per row

Count a repeating pattern

How to installsnowmobile studs.

Identify your track

Choose the stud & pattern

Mark the positions

Prepare the holes

Screw in the studs

Inspect & maintain

Snowmobile videos& rider experience.

How long caniGrip studs last?

More snowmobile videos

Snowmobile studquestions, answered.

Can’t findyour track?

Include these details

Related iGrip guides

Login

Register

Snowmobile
stud guide.
Safety first.

Which studs fit
your track?

Why choose
snowmobile studs?

ST vs SS:
which studs fit?

How many studs
do you need?

How to install
snowmobile studs.

Snowmobile videos
& rider experience.

How long can
iGrip studs last?

Snowmobile stud
questions, answered.

Can’t find
your track?