AFAM Chain kit 520 MXPRO - 13/51-118 - Alu Standard Rear Sprocket for GAS GAS MCF 450, HUSQVARNA FC 450 and KTM SXF 450

AFAM offers this chain and sprocket kit for GAS GAS MCF 450, HUSQVARNA FC 450 and KTM SXF 450 2024-2027. The front sprocket, on the gearbox output, drives the chain, which turns the rear sprocket bolted to the rear wheel.

Why replace the whole kit?

The benefits:

• A worn chain damages the teeth and worn teeth damage the chain: replacing all three parts together avoids ruining a new part within a few rides.
• Pitch, tooth counts and chain length are already matched: one order for the whole final drive.
• You can adapt the gearing: more teeth on the rear sprocket (or fewer on the front) gives more acceleration but less top speed; fewer teeth on the rear does the opposite.

When should you replace this part?

Hooked or pointed teeth, a chain that lifts off the back of the rear sprocket when pulled, tight spots or slack that needs adjusting every ride: the kit is worn out.

Specifications and fitting tips

• Front sprocket version: Standard
• Rear sprocket version: Standard
• Use: Off-Road
• Chain Color: Gold/Gold
• Connecting link: Split link
• Manufacturer part number: 3073121

Cross-Mania tip: Align the rear wheel (same marks on both sides), tighten the rear sprocket bolts to the specified torque with threadlocker, set the slack to the manual and recheck it after the first ride.

Compatibility

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

Fits:
GAS GAS MCF 450 2027
GAS GAS MCF 450 2026
GAS GAS MCF 450 2025
GAS GAS MCF 450 2024
HUSQVARNA FC 450 2027
HUSQVARNA FC 450 2026
HUSQVARNA FC 450 2025
HUSQVARNA FC 450 2024
KTM SXF 450 2027
KTM SXF 450 2026
KTM SXF 450 2025
KTM SXF 450 2024