RENTHAL R1 428 Drive Chain - 122 links for KTM SX 85 2004-2017

On KTM SX 85 from 2004 to 2017, the RENTHAL R1 428 - 122 maillons C268 drive chain fits in place of the original part. Between the engine and the rear wheel, the chain takes every acceleration. A tired chain stretches, wears the sprockets and ends up jumping off or snapping: it's a major wear part.

Specifications

• Brand: RENTHAL
• Manufacturer part number: C268
• EAN code: 5026190044933
• Pitch: 428
• Number of links: 122
• Non-sealed chain (less friction, more frequent maintenance)
• Weight: 1.4 kg
• Engine: 2-stroke

When to replace it?

• Chain that stretches quickly: you have to adjust it more and more often.
• Tight spots or stiff links when you turn it.
• Chain that lifts away from the rear sprocket when you pull it rearwards.

Replace the chain when the adjusters reach the end of their travel or as soon as it has tight spots, and always together with the front and rear sprockets if they're worn.

Fitting tips

1. Check the pitch (415, 420, 428, 520…) and the number of links of your original chain.
2. Shorten the chain if needed with a chain breaker, cutting at the end opposite the master link.
3. Fit the master link: the clip goes on with its open end facing away from the direction of rotation; a rivet-type link is riveted with the proper tool.
4. Set the tension as per the manual, with the wheel aligned, then lube with a chain lube.
5. Recheck the tension after the first ride: a new chain beds in a little.

Why RENTHAL?

Renthal was born in England in 1969 from the partnership of Andrew Renshaw and Henry Rosenthal (hence the name), starting out with trials handlebars, and has made its handlebars in its own Manchester factory since 1975. In 2004, it became the first aluminium handlebar fitted as original equipment on a Japanese off-road bike, and Honda, Kawasaki and Suzuki use it on their performance motocross models.

Spare parts and items to plan

• Front sprocket : RFX · SCAR
• Rear sprocket : RENTHAL · MOTO-MASTER
• Chain lube : LIQUI MOLY 400 ml · SCOTTOILER

Frequently asked questions

Sealed or non-sealed chain?
An O-ring or X-ring chain keeps its grease inside and lasts longer. A non-sealed chain has less friction and is still popular in motocross, but needs lubing more often.

Should the sprockets be changed?
If they're worn, yes: a new chain running on a worn front sprocket and rear sprocket gets damaged very quickly.

Compatibility

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

Fits:
KTM SX 85 2017
KTM SX 85 2016
KTM SX 85 2015
KTM SX 85 2014
KTM SX 85 2013
KTM SX 85 2012
KTM SX 85 2011
KTM SX 85 2010
KTM SX 85 2009
KTM SX 85 2008
KTM SX 85 2007
KTM SX 85 2006
KTM SX 85 2005
KTM SX 85 2004