MOTO-MASTER Ultralight Steel Rear Sprocket for SUZUKI and KAWASAKI 1980-2027

The MOTO-MASTER steel rear sprocket is designed for SUZUKI DR 250, DR 350, DRZ 250, DRZ 400, RM 125, RM 250, RMX 450, RMZ 250, RMZ 450 and KAWASAKI KLX 400 from 1980 to 2027. The rear sprocket is the large sprocket bolted to the rear wheel hub: together with the front sprocket and the chain, it transmits the engine's power to the wheel. Made of steel, it stands up to wear far better than an aluminium sprocket, especially in mud and sand.

Specifications

• Brand: MOTO-MASTER
• Manufacturer part numbers: 620011140, 620011141, 620011142, 620011143, 620011144, 620011145, 620011146, 620011147, 620011148, 620011149, 620011150, 620011151, 620011152, 620011153
• Chain pitch: 520
• Material: steel
• Available versions: 40 Teeth: ref. 620011140; 41 Teeth: ref. 620011141; 42 Teeth: ref. 620011142; 43 Teeth: ref. 620011143; 44 Teeth: ref. 620011144; 45 Teeth: ref. 620011145; 46 Teeth: ref. 620011146; 47 Teeth: ref. 620011147; 48 Teeth: ref. 620011148; 49 Teeth: ref. 620011149; 50 Teeth: ref. 620011150; 51 Teeth: ref. 620011151; 52 Teeth: ref. 620011152; 53 Teeth: ref. 620011153
• Weight: 850 g

Choosing the right number of teeth

For the same bike, go for the number of teeth of your current sprocket (it's often stamped on it). More teeth on the rear sprocket shortens the gearing: more acceleration, lower top speed. Fewer teeth lengthens it. Even one or two teeth make a clear difference; if you change a lot, the chain length may need adjusting.

When to replace it?

• Teeth worn to a point or into a hook shape, worn down on one side only.
• Chain that lifts away from the sprocket when you pull it rearwards.
• Drivetrain noise, jerkiness or a chain that jumps under load.

Check the sprocket every time you service the chain. Always replace the rear sprocket, front sprocket and chain together: a new part running with worn ones wears out very quickly.

Fitting tips

1. Clean the hub and check that it isn't cracked or distorted.
2. Fit the sprocket the right way round (markings facing out) and tighten the bolts in a criss-cross pattern to the manufacturer's torque, with medium-strength threadlocker if the manual calls for it.
3. While you're at it, replace the front sprocket and the chain if they're worn.
4. Set the chain tension as per the manual, with the wheel aligned, then lube it with a suitable chain lube.
5. Recheck the bolt tightness and the chain tension after the first ride.

Why MOTO-MASTER?

In motocross, Moto-Master was working with the Red Bull KTM Factory Racing team as early as 2010, and it backed the MXGP world championship in 2015. On the technical side, the Flame profile of its discs is designed to improve cooling and go easy on the pads, and its Racing GP sintered pads use a backing plate with hooks (NRS technology) that stops the friction material from coming away.

Spare parts and items to plan

• Front sprocket : INNTECK · MOTO-MASTER
• Drive chain : RENTHAL · RENTHAL 520
• Chain lube : LIQUI MOLY 400 ml · MUC OFF

Frequently asked questions

Aluminium or steel?
Aluminium is lighter and works well for motocross and racing. Steel lasts longer: it's the best choice for enduro, sandy terrain or if you put in a lot of hours.

Should the chain be replaced at the same time?
Yes, if it's worn: a stretched chain wears out a new sprocket in a few hours.

Compatibility

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

Fits:
KAWASAKI KLX 400 2007
KAWASAKI KLX 400 2006
KAWASAKI KLX 400 2005
KAWASAKI KLX 400 2004
KAWASAKI KLX 400 2003
SUZUKI DR 250 1993
SUZUKI DR 250 1992
SUZUKI DR 250 1991
SUZUKI DR 250 1990
SUZUKI DR 350 2000
SUZUKI DR 350 1999
SUZUKI DR 350 1998
SUZUKI DR 350 1997
SUZUKI DR 350 1996
SUZUKI DR 350 1995
SUZUKI DR 350 1994
SUZUKI DR 350 1993
SUZUKI DR 350 1992
SUZUKI DR 350 1991
SUZUKI DR 350 1990
SUZUKI DRZ 250 2007
SUZUKI DRZ 250 2006
SUZUKI DRZ 250 2005
SUZUKI DRZ 250 2004
SUZUKI DRZ 250 2003
SUZUKI DRZ 250 2002
SUZUKI DRZ 250 2001
SUZUKI DRZ 400 2007
SUZUKI DRZ 400 2006
SUZUKI DRZ 400 2005
SUZUKI DRZ 400 2004
SUZUKI DRZ 400 2003
SUZUKI DRZ 400 2002
SUZUKI RM 125 2008
SUZUKI RM 125 2007
SUZUKI RM 125 2006
SUZUKI RM 125 2005
SUZUKI RM 125 2004
SUZUKI RM 125 2003
SUZUKI RM 125 2002
SUZUKI RM 125 2001
SUZUKI RM 125 2000
SUZUKI RM 125 1999
SUZUKI RM 125 1998
SUZUKI RM 125 1997
SUZUKI RM 125 1996
SUZUKI RM 125 1995
SUZUKI RM 125 1994
SUZUKI RM 125 1993
SUZUKI RM 125 1992
SUZUKI RM 125 1991
SUZUKI RM 125 1990
SUZUKI RM 125 1989
SUZUKI RM 125 1988
SUZUKI RM 125 1987
SUZUKI RM 125 1986
SUZUKI RM 125 1985
SUZUKI RM 125 1984
SUZUKI RM 125 1983
SUZUKI RM 125 1982
SUZUKI RM 125 1981
SUZUKI RM 125 1980
SUZUKI RM 250 2008
SUZUKI RM 250 2007
SUZUKI RM 250 2006
SUZUKI RM 250 2005
SUZUKI RM 250 2004
SUZUKI RM 250 2003
SUZUKI RM 250 2002
SUZUKI RM 250 2001
SUZUKI RM 250 2000
SUZUKI RM 250 1999
SUZUKI RM 250 1998
SUZUKI RM 250 1997
SUZUKI RM 250 1996
SUZUKI RM 250 1995
SUZUKI RM 250 1994
SUZUKI RM 250 1993
SUZUKI RM 250 1992
SUZUKI RM 250 1991
SUZUKI RM 250 1990
SUZUKI RM 250 1989
SUZUKI RM 250 1988
SUZUKI RM 250 1987
SUZUKI RMX 450 2012
SUZUKI RMX 450 2011
SUZUKI RMX 450 2010
SUZUKI RMZ 250 2027
SUZUKI RMZ 250 2026
SUZUKI RMZ 250 2025
SUZUKI RMZ 250 2024
SUZUKI RMZ 250 2023
SUZUKI RMZ 250 2022
SUZUKI RMZ 250 2021
SUZUKI RMZ 250 2020
SUZUKI RMZ 250 2019
SUZUKI RMZ 250 2018
SUZUKI RMZ 250 2017
SUZUKI RMZ 250 2016
SUZUKI RMZ 250 2015
SUZUKI RMZ 250 2014
SUZUKI RMZ 250 2013
SUZUKI RMZ 250 2012
SUZUKI RMZ 250 2011
SUZUKI RMZ 250 2010
SUZUKI RMZ 250 2009
SUZUKI RMZ 250 2008
SUZUKI RMZ 250 2007
SUZUKI RMZ 450 2027
SUZUKI RMZ 450 2026
SUZUKI RMZ 450 2025
SUZUKI RMZ 450 2024
SUZUKI RMZ 450 2023
SUZUKI RMZ 450 2022
SUZUKI RMZ 450 2021
SUZUKI RMZ 450 2020
SUZUKI RMZ 450 2019
SUZUKI RMZ 450 2018
SUZUKI RMZ 450 2017
SUZUKI RMZ 450 2016
SUZUKI RMZ 450 2015
SUZUKI RMZ 450 2014
SUZUKI RMZ 450 2013
SUZUKI RMZ 450 2012
SUZUKI RMZ 450 2011
SUZUKI RMZ 450 2010
SUZUKI RMZ 450 2009
SUZUKI RMZ 450 2008
SUZUKI RMZ 450 2007
SUZUKI RMZ 450 2006
SUZUKI RMZ 450 2005