§ 04 / Model

All KTM parts

KTM SX 125

Two-stroke 125. Lives on the pipe, dies if you don't service it. Top-end goes off fast under race revs, so swap pistons on a schedule, not when it nips. Reeds tire. Expansion chamber mounts crack from vibration. Check both every meeting. Every part below is fitment-checked against the SX 125. Filter by category, brand or price.

1,970 parts fit this bike

// Parts

Showing 240 of 1970

Free UK shipping over £100 14-day no-quibble returns OEM-grade parts only UK support · Tue–Fri 9–5, Sat 9–4 Race-shop prices, paddock service Collection from Leeds by arrangement
Free UK shipping over £100 14-day no-quibble returns OEM-grade parts only UK support · Tue–Fri 9–5, Sat 9–4 Race-shop prices, paddock service Collection from Leeds by arrangement