TRK's appeal is refreshingly old-school: make good replacement parts, group them into useful kits and keep the price sensible.
Anyone who has rebuilt an old motorcycle caliper knows the routine: strip it, discover three more tired parts, place another order, then wait. TRK was developed to take some of that faff out of the job by supplying application-led repair kits rather than making the rider chase every tiny component individually.
The original TRK range focused heavily on braking, with caliper seals, stainless steel pistons and master-cylinder repair parts . The stainless piston range is central to the idea: improve corrosion resistance in one of the hardest-working parts of the caliper, then back that confidence with a lifetime guarantee against corrosion. The same practical thinking now extends into clutch components too.
TRK stainless steel brake pistons are intended as more than a simple replacement for corroded plated items. Their corrosion resistance means they are often regarded as an upgrade when a caliper is being rebuilt, and TRK backs them with a lifetime guarantee against corrosion, workmanship and manufacturing defects in materials, subject to the published conditions.
The guarantee does not cover mechanical or accidental damage, alteration, misuse, inappropriate cleaning, improper care or incorrect fitment. Rubber seals and other parts supplied in a TRK brake kit are not covered by the stainless-piston lifetime guarantee.
Proof of purchase is required and the product must have been supplied by Wemoto Ltd or an authorised TRK distributor, fitted to the intended application and maintained correctly. Associated labour and warranty shipping costs are not covered. Statutory rights are unaffected.
A conventional bleed nipple sits exposed to water, salt and road grime for years at a time. Once corrosion takes hold, it can seize into the caliper badly enough to make routine bleeding difficult — or leave the screw impossible to remove without further work.
Many TRK caliper rebuild kits include an upgraded stainless steel bleed nipple. It is a simple detail, but one aimed directly at a problem anyone who works on older motorcycles will recognise.
Use the motorcycle manufacturer's workshop information, correct brake fluid and proper tools. If a braking-system rebuild is outside your experience, hand it to someone qualified.