JT SPROCKETS aluminium rear sprocket 420 pitch for KAWASAKI KX 100, KX 80, KX 85 and SUZUKI RM 100 1976-2023

JT SPROCKETS offers this rear sprocket for KAWASAKI KX 100, KX 80, KX 85 and SUZUKI RM 100 1976-2023. 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?

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: 420
• Material: Aluminium
• Rear sprocket teeth count: 50
• Rear sprocket version: Standard
• Aviation-grade 7075-T6 aluminium alloy (Ergal) for lightweight competition sprocket
• Sprocket with "Anti-mud" finish which facilitates the projection of the particles, for a better transmission

Available in several colours.

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 : RFX · PBR
• Drive chain : AFAM A420MX2-G · AFAM A420R1-G
• Chain lube : LIQUI MOLY 400 ml · MUC OFF

Compatibility

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

Fits:
KAWASAKI KX 100 2014
KAWASAKI KX 100 2013
KAWASAKI KX 100 2012
KAWASAKI KX 100 2011
KAWASAKI KX 100 2010
KAWASAKI KX 100 2009
KAWASAKI KX 100 2008
KAWASAKI KX 100 2007
KAWASAKI KX 100 2006
KAWASAKI KX 100 2005
KAWASAKI KX 100 2004
KAWASAKI KX 100 2003
KAWASAKI KX 100 2002
KAWASAKI KX 100 2001
KAWASAKI KX 100 2000
KAWASAKI KX 100 1999
KAWASAKI KX 100 1998
KAWASAKI KX 80 2000
KAWASAKI KX 80 1999
KAWASAKI KX 80 1998
KAWASAKI KX 85 2023
KAWASAKI KX 85 2021
KAWASAKI KX 85 2020
KAWASAKI KX 85 2019
KAWASAKI KX 85 2018
KAWASAKI KX 85 2017
KAWASAKI KX 85 2016
KAWASAKI KX 85 2015
KAWASAKI KX 85 2014
KAWASAKI KX 85 2013
KAWASAKI KX 85 2012
KAWASAKI KX 85 2011
KAWASAKI KX 85 2010
KAWASAKI KX 85 2009
KAWASAKI KX 85 2008
KAWASAKI KX 85 2007
KAWASAKI KX 85 2006
KAWASAKI KX 85 2005
KAWASAKI KX 85 2004
KAWASAKI KX 85 2003
KAWASAKI KX 85 2002
KAWASAKI KX 85 2001
SUZUKI RM 100 2003
SUZUKI RM 100 1981
SUZUKI RM 100 1980
SUZUKI RM 100 1979
SUZUKI RM 100 1978
SUZUKI RM 100 1977
SUZUKI RM 100 1976