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HMParts 41 Tooth 428 Pitch Dirt Bike Pinion Sprocket 91mm (LK 91mm) New

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Here's a fresh 41-tooth pinion sprocket from HMParts for your dirt bike or pit bike.

Kettenrad 428 41 Zähne LK 92 mm HMParts Dirt Bike Pit Bike Moto

It's a 428 pitch sprocket, which is super common on many smaller-displacement bikes.

17 Tooth 428 Pit Bike Front Sprocket (17mm) - Red Circles

This is the front sprocket (the pinion) that mounts on the countershaft.

HMParts Dirt Pit Bike Monkey Dax Atv Sprocket 428 14 Z 20mm

Important measurement here—the LK (or pitch circle diameter) is 91mm, so double-check that matches what you need.

HMParts Dirt Bike Pit Bike Moto Cross Pinion Sprocket 428 41

It's brand new, made in China, and ready to install.

If you're re-gearing your bike for more top speed or better acceleration, swapping out the front sprocket is the way to go.

AFAM 525 Pitch Hard Anodised Alloy Rear Sprocket - 41 Teeth - Bike

This one's a solid, no-frills replacement part from HMParts to get you back on the trail.

Universal 8MM 10MM dirt pit bike moto cross access... – Grandado

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