MOTO-MASTER Ultralight Front Sprocket for KTM EGS 400, ENDURO 690, LC4 620, LC4 625, LC4 640, SC 400, SX 400, SXC 625 1996-2026

The MOTO-MASTER front sprocket is designed for KTM EGS 400, ENDURO 690, LC4 620, LC4 625, LC4 640, SC 400, SX 400, SXC 625 from 1996 to 2026. Mounted on the gearbox output shaft (countershaft), the front sprocket passes the engine's torque on to the chain. Every tooth is loaded on every turn of the wheel: a worn front sprocket makes the chain jump and speeds up wear on the whole drivetrain.

Specifications

• Brand: MOTO-MASTER
• Manufacturer part numbers: 610461113, 610461114, 610461115, 610461116
• Chain pitch: 520
• Material: steel
• Available versions: 13 Teeth: ref. 610461113; 14 Teeth: ref. 610461114; 15 Teeth: ref. 610461115; 16 Teeth: ref. 610461116
• Weight: 140 g
• Engine: 4-stroke

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?

Moto-Master is a Dutch brand founded in 1997 by Gaston Vernon that specialises in braking: discs, sintered pads and oversize kits. Its discs are designed in CAD and then laser-cut on CNC machines, with manufacturing in the Netherlands and ISO 9001:2015 certification.

Spare parts and items to plan

• Rear sprocket : JT SPROCKETS · PBR
• Drive chain : RENTHAL
• Chain lube : LIQUI MOLY 400 ml · MUC OFF 400 ml

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:
KTM EGS 400 2002
KTM EGS 400 2001
KTM EGS 400 2000
KTM EGS 400 1999
KTM EGS 400 1998
KTM EGS 400 1997
KTM EGS 400 1996
KTM ENDURO 690 2026
KTM ENDURO 690 2025
KTM ENDURO 690 2024
KTM ENDURO 690 2023
KTM ENDURO 690 2022
KTM ENDURO 690 2021
KTM ENDURO 690 2020
KTM ENDURO 690 2019
KTM ENDURO 690 2018
KTM ENDURO 690 2017
KTM ENDURO 690 2016
KTM ENDURO 690 2015
KTM ENDURO 690 2014
KTM ENDURO 690 2013
KTM ENDURO 690 2012
KTM ENDURO 690 2011
KTM ENDURO 690 2010
KTM ENDURO 690 2009
KTM ENDURO 690 2008
KTM LC4 620 2001
KTM LC4 620 2000
KTM LC4 620 1999
KTM LC4 620 1998
KTM LC4 620 1997
KTM LC4 625 2006
KTM LC4 625 2005
KTM LC4 625 2004
KTM LC4 625 2002
KTM LC4 640 2007
KTM LC4 640 2006
KTM LC4 640 2005
KTM LC4 640 2004
KTM LC4 640 2003
KTM LC4 640 2002
KTM LC4 640 2001
KTM LC4 640 2000
KTM LC4 640 1999
KTM LC4 640 1998
KTM SC 400 2001
KTM SC 400 2000
KTM SC 400 1999
KTM SX 400 2010
KTM SX 400 2009
KTM SX 400 2008
KTM SX 400 2007
KTM SX 400 2006
KTM SX 400 2005
KTM SX 400 2004
KTM SX 400 2003
KTM SX 400 2002
KTM SX 400 2001
KTM SX 400 2000
KTM SXC 625 2007
KTM SXC 625 2006
KTM SXC 625 2005
KTM SXC 625 2004
KTM SXC 625 2003