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972

HELMETS

HELMET

ACCESSORIES

EYEWEAR

APPAREL

PROTECTIVE

SURVIVAL /

BAGS

VIDEOS

SNOWMOBILE

ACCESSORIES

SNOWBIKE

SLEDS /

TRAILERS

ELECTRICAL

EXHAUST

ENGINE

STEERING /

CONTROLS

AIR /FUEL

WINDSHIELDS

BODY

TUNNEL /RAIL

ACCESSORIES

TRACKS /STUDS /

SPROCKETS

REAR

SUSPENSION

SHOCKS

FRONT

SUSPENSION

SKIS /RUNNERS

BRAKES

CHAIN /

SPROCKETS

BELTS

CLUTCHING

CHEMICALS

TOOLS /

FASTENERS

PROMOTIONAL

REFERENCE

INDEX

T-NUT STUDS

Start with Steps 1 and 2 above.

3. Push a T-nut puller through hole from the outside of the

track.

4. Thread a T-nut onto the T-nut puller and seat into the track.

5. Reverse your installation tool and remove T-nut puller from

the T-nut while maintaining pressure on T-nut to keep it in the

track.

6. Position backer plate onto stud. Put a drop of thread locker

on the T-nut threads and stud threads. Be sure to align your

backer plate with track lug.

7. Torque stud to 80 to 100 inch-lbs. and let thread locker dry

for 24 hours at room temperature.

TRACTION AND CONTROL GUIDE

STUD INSTALLATION

To ensure minimal stud loss, check for studs that have

loosened after each outing.

1. Use Stud Boy’s studding template, paint marker and

instructions and transfer the pattern of your choice on the

track.

2. With a sharp Stud Boy track hole cutter, drill the pattern

you marked on the track during step 1. Be sure to hold your

cutter straight and watch while drilling to avoid damage to the

idler wheels or other suspension components.

72 Studs

96 Studs

120 Studs

144 Studs

168 Studs

192 Studs

240 Studs

STUD QUANTITIES

Illustrations below are for reference only. May not apply to the

make and model of your snowmobile.

How many studs you should install:

A good starting point is 1-1/2 studs per horsepower. When

using this formula as a starting point, you can increase

or decrease the number of studs to fit a pattern that best

suits your riding style. We strongly suggest that you use not

less than one stud per horsepower at any time. However,

be careful not to over-stud. Over-studding will allow less

penetration, resulting in a loss of traction. Also, if you over-

stud you may lose the ability to turn.

PUSH-THROUGH STUDS

Start with Steps 1 and 2 above.

3. Position the stud into the hole in your track from the inside

of the track.

4. Install the backer plate and lock nut onto the installed stud

(Do not use Loctite™ when using nylon lock nuts).

5. Tighten the stud assembly using a deep well socket and

allen wrench until the stud and backer plate bottom out

against each other. Don’t over tighten the lock nut. Be sure to

align your backer plate with track lug.

STUD LENGTH

Trail riders should use a stud that is no more than 3/8” (.375”)

taller than the tallest part of your track. While some people

use longer studs in trail and racing applications, you must

take special precautions to ensure that you will not damage

your sled or the traction products. Be sure to check your

installation for proper protection of the tunnel, tunnel

protectors and heat exchangers.

FORMULA: T-nut Studs

- Stud length + Backer plate (steel

.190” or alum. .225”) + Track deflection (.045”) - Track lug

height = Effective stud length. Example: .875” + .225” +.45” -

.725” = .420” effective stud length.

Push-through Studs

- Stud length + Backer plate (.190”)

+ Track deflection (.045”) - Track lug height = Effective stud

length. Example: .75” + .19” + .045” + .725” = .385” effective

stud length.

Recommended Stud Quantities

Snowmobile

Horsepower

Traction for Trail

riding

Agg. trail, snow-

cross or X-country

Drag racing Ice

or Grass

Oval Racing

0-60

72

72-96

96

96-120

60-75

72

96*

120

144

75-100

96

120

144

168

100-120

120

144

168-192

192

120-140

144

168-192

192

240

130-170

192

240

240

336

*Note

: Snow-cross rules dictate 96 studs in the center of the track.

RECOMMENDED STUD

PATTERNS

TRACKS / STUDS / SPROCKETS