MOTO-MASTER Ultralight Front Sprocket for SUZUKI RM 125, RMZ 250 1981-2012

The MOTO-MASTER front sprocket is designed for SUZUKI RM 125, RMZ 250 from 1981 to 2012. The front sprocket drives the chain at the gearbox output. Small and working hard, it wears faster than the rear sprocket: it's also the simplest way to change the bike's gearing.

Specifications

• Brand: MOTO-MASTER
• Manufacturer part numbers: 610211112, 610211113, 610211114, 610211115
• Chain pitch: 520
• Material: steel
• Available versions: 12 Teeth: ref. 610211112; 13 Teeth: ref. 610211113; 14 Teeth: ref. 610211114; 15 Teeth: ref. 610211115
• Weight: 140 g

Choosing the right number of teeth

Start from the stock number of teeth. One tooth less on the front sprocket shortens the gearing (more acceleration, ideal on tight terrain); one tooth more lengthens it (more speed on fast tracks). One tooth on the front sprocket is worth roughly three to four teeth on the rear sprocket.

When to replace it?

• Teeth thinned, pointed or hooked.
• Chain that jumps or slaps under acceleration.
• Play between the sprocket and the shaft, or marked splines.

Check it every time you service the chain and replace it along with the rear sprocket and the chain. Many riders change the front sprocket with every new chain, because it wears much faster than the rear sprocket.

Fitting tips

1. Loosen the sprocket nut or bolt while holding the rear wheel with the brake, before slackening the chain.
2. Clean the countershaft and check the oil seal behind the sprocket.
3. Fit the sprocket the right way round, with a lock washer or threadlocker as on the original assembly, and tighten to the manufacturer's torque.
4. Set the chain tension and lube it with chain lube.

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

• Rear sprocket : MOTO-MASTER 6200111 · MOTO-MASTER 6200132
• Drive chain : RENTHAL · RENTHAL 520
• Chain lube : LIQUI MOLY 400 ml · SCOTTOILER

Frequently asked questions

Should the rear sprocket be changed too?
If it's worn, yes: a new front sprocket running on a tired rear sprocket and chain is worn out within a few hours.

Compatibility

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

Fits:
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 RMZ 250 2012
SUZUKI RMZ 250 2011
SUZUKI RMZ 250 2010
SUZUKI RMZ 250 2009
SUZUKI RMZ 250 2008
SUZUKI RMZ 250 2007