AFAM aluminium rear sprocket 46T, 428 pitch for YAMAHA YZ 80 1985-1992

AFAM offers this rear sprocket for YAMAHA YZ 80 1985-1992. The rear sprocket receives the engine’s power through the chain and turns the rear wheel. Its number of teeth sets the gearing: with more teeth the bike accelerates harder but has a lower top speed; with fewer teeth it is the other way round.

Why fit a new rear sprocket?

The benefits:

• New teeth that hold the chain properly and make it last.
• The number of teeth is chosen to suit the terrain: more teeth for slow, tight sections, fewer for fast tracks.
• Aluminium or steel: aluminium is lighter, steel lasts much longer; “mud-release” models have cut-outs that clear the dirt.

When should you replace the rear sprocket on your YAMAHA YZ 80?

Pointed, hooked or uneven teeth, or a chain that lifts easily off the back of the sprocket: the chain kit needs replacing.

Specifications and fitting tips

• Chain pitch: 428
• Material: Aluminium
• Rear sprocket teeth count: 46
• Rear sprocket version: Standard
• Racing aluminium crown gear
• Ultra-light with hard anodization
• Manufacturer part number: 13108-46

Cross-Mania tip: Replace the rear sprocket, front sprocket and chain together, tighten the sprocket bolts in a cross pattern with threadlocker and set the chain slack to the manual.

Also needed with this part

• Front sprocket : PBR · AFAM
• Drive chain : RENTHAL 428 · AFAM
• Chain lube : LIQUI MOLY 400 ml · LIQUI MOLY 250 ml

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
YAMAHA YZ 80 1992
YAMAHA YZ 80 1991
YAMAHA YZ 80 1990
YAMAHA YZ 80 1989
YAMAHA YZ 80 1988
YAMAHA YZ 80 1987
YAMAHA YZ 80 1986
YAMAHA YZ 80 1985