PROX Clutch Master Cylinder Rebuild Kit for KTM, HUSQVARNA and GAS GAS 2016-2025

The PROX 16.940010 clutch master cylinder rebuild kit is designed for KTM EXC 250, EXC 300, SX 125, SX 150, SXF 250, SXF 350, HUSQVARNA FC 250, FC 350, TC 125 and GAS GAS MC 125, MCF 250 from 2016 to 2025. The clutch master cylinder turns the effort on the lever into hydraulic pressure. When its seals wear, pressure escapes: the lever goes soft and the clutch doesn't disengage properly. This kit replaces the piston and its seals.

Specifications

• Brand: PROX
• Manufacturer part number: 16.940010
• Weight: 30 g

When to replace it?

• Lever that sinks or doesn't return properly.
• Fluid leaking at the lever.
• Clutch that doesn't disengage properly despite bleeding.

As soon as a leak appears or the lever loses its firmness.

Fitting tips

1. Drain the system and remove the master cylinder cleanly.
2. Replace the piston and the seals from the kit, lubricated with the specified fluid.
3. Refill and bleed the system with the specified fluid, without mixing mineral oil and DOT fluid.

Why PROX?

ProX Racing Parts has been supplying engine and clutch parts to motocross riders since 1975, from its headquarters near Amsterdam. According to its catalogue, most of its parts are made in Japan, by manufacturers that also produce parts for the Japanese motorcycle makers.

Spare parts and items to plan

• Brake and clutch fluid : MOTUL 1 L · MOTUL 5 L
• Clutch slave cylinder rebuild kit : PROX · REKLUSE

Frequently asked questions

Which fluid should I use?
The one shown on the master cylinder cap or in the manual. Never mix mineral oil and DOT fluid.

Compatibility

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

Fits:
GAS GAS MC 125 2023
GAS GAS MC 125 2022
GAS GAS MC 125 2021
GAS GAS MCF 250 2023
GAS GAS MCF 250 2022
GAS GAS MCF 250 2021
HUSQVARNA FC 250 2025
HUSQVARNA FC 250 2024
HUSQVARNA FC 250 2023
HUSQVARNA FC 350 2025
HUSQVARNA FC 350 2024
HUSQVARNA FC 350 2023
HUSQVARNA FC 350 2022
HUSQVARNA TC 125 2025
HUSQVARNA TC 125 2024
HUSQVARNA TC 125 2023
HUSQVARNA TC 125 2022
KTM EXC 250 2017
KTM EXC 300 2018
KTM EXC 300 2017
KTM SX 125 2025
KTM SX 125 2024
KTM SX 125 2023
KTM SX 125 2022
KTM SX 125 2021
KTM SX 125 2020
KTM SX 125 2019
KTM SX 125 2018
KTM SX 125 2017
KTM SX 125 2016
KTM SX 150 2025
KTM SX 150 2024
KTM SX 150 2023
KTM SX 150 2022
KTM SX 150 2021
KTM SX 150 2020
KTM SX 150 2019
KTM SX 150 2018
KTM SX 150 2017
KTM SX 150 2016
KTM SXF 250 2025
KTM SXF 250 2024
KTM SXF 250 2023
KTM SXF 250 2022
KTM SXF 250 2021
KTM SXF 250 2020
KTM SXF 250 2019
KTM SXF 250 2018
KTM SXF 250 2017
KTM SXF 250 2016
KTM SXF 350 2025
KTM SXF 350 2024
KTM SXF 350 2023
KTM SXF 350 2022
KTM SXF 350 2021
KTM SXF 350 2018
KTM SXF 350 2017
KTM SXF 350 2016