Confirm the bike
Use the exact make, model, year and brake position. TRK kits are application-led, so the motorcycle listing should be your first check.
A tired master cylinder can spoil an otherwise healthy brake system. TRK front and rear repair kits let the original unit be rebuilt where the bore and body are still serviceable.
A master cylinder turns lever or pedal movement into hydraulic pressure. As the internal seals and piston assembly wear, symptoms can include poor return, inconsistent pressure or fluid bypass inside the cylinder.
TRK repair kits are offered for both front and rear applications. Wemoto's current TRK range includes kits in several piston diameters and lengths, so matching the correct motorcycle and specification matters.
Use the exact make, model, year and brake position. TRK kits are application-led, so the motorcycle listing should be your first check.
Where dimensions are supplied, compare piston diameter and overall length with the correct service information or original assembly.
A new internal kit cannot repair a badly scored, corroded or otherwise damaged master-cylinder bore. Inspect the reusable parts before committing to the rebuild.
The current Wemoto TRK master-cylinder category includes front and rear repair kits with listed piston diameters from roughly 10.9 mm through to 13.95 mm, plus model-specific kits where the complete application is already identified.
Multiple TRK front kits cover different piston diameters and body designs, including 10.9 mm, 11 mm, 12.7 mm and 13.95 mm examples in the current range.
Rear master-cylinder kits are also available, including 12.65 mm and 13.9 mm examples. Always use the exact application listing.
Repair kits can be especially useful where a complete original master cylinder is expensive, discontinued or simply unnecessary when the main casting remains sound.
Hydraulic brake components have very little patience for dirt. Work on a clean bench, keep lint and grit away from the bore and seals, and use only brake-compatible fluid and assembly products specified for the job.
Once rebuilt, the system must be filled and bled correctly, then checked for leaks, proper lever or pedal return and dependable pressure before the motorcycle is ridden.