AFAM aluminium rear sprocket 520 pitch for GAS GAS CONTACT TXT 250, PAMPERA 125, PAMPERA 250, TXT 280, TXT 321 and SHERCO ST 125

AFAM offers this rear sprocket for GAS GAS CONTACT TXT 250, PAMPERA 125, PAMPERA 250, TXT 280, TXT 321 and SHERCO ST 125 1997-2005. 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: 520
• Material: Aluminium
• Rear sprocket version: Standard
• Type: Rear sprocket
• Racing aluminium crown gear
• Ultra-light with hard anodization

Choose the number of teeth from the list: fewer teeth on the front sprocket (or more on the rear) gives more acceleration, the opposite gives a longer gearing.

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 : RENTHAL · AFAM
• Drive chain : AFAM A520XRR3-G · AFAM A520MR2-G 1
• Chain lube : LIQUI MOLY 400 ml · MUC OFF 400 ml

Compatibility

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

Fits:
GAS GAS CONTACT TXT 250 1999
GAS GAS PAMPERA 125 2001
GAS GAS PAMPERA 125 2000
GAS GAS PAMPERA 125 1999
GAS GAS PAMPERA 125 1998
GAS GAS PAMPERA 125 1997
GAS GAS PAMPERA 250 2001
GAS GAS TXT 125 2001
GAS GAS TXT 280 2001
GAS GAS TXT 280 2000
GAS GAS TXT 321 2001
GAS GAS TXT 321 2000
SHERCO ST 125 2005
SHERCO ST 125 2004
SHERCO ST 125 2003