EK/PBR Chain kit 520M3 - 14/50-118 - Alu Standard Rear Sprocket for KTM SX 250, SXF 350, XCF 350 and HUSQVARNA FC 350 1999-2027

EK CHAIN offers this chain and sprocket kit for KTM SX 250, SXF 350, XCF 350 and HUSQVARNA FC 350 1999-2027. 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: MX
• Connecting link: Split link
• EK Chain Type: M3
• Manufacturer part number: 3042092

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:
HUSQVARNA FC 350 2014
KTM SX 250 2003
KTM SX 250 2002
KTM SX 250 2001
KTM SX 250 2000
KTM SX 250 1999
KTM SXF 350 2012
KTM XCF 350 2027
KTM XCF 350 2026
KTM XCF 350 2025