September 12th, 2023.



TRK is one of the first manufacturers to release an upgrade kit to replace BMW OE part number 34112331631. A front twin caliper kit and a rear caliper kit are now available.

Stainless steel brake pistons not only provide a substantial improvement over stock pistons, but also offer massive savings over OE pistons which up until now were the only option.

- Stainless Steel Brake Pistons
- Piston Fluid Seal
- Piston Dust Seal
- Caliper Split Seals
- Copper Washers
- Lifetime Guarantee On All Stainless Steel Pistons

TRK is one of the first to offer a lifetime guarantee on the stainless steel piston range, against corrosion, pitting and the elements.

Fitting: BMW K100RS 89-92, K1 88 - 93, K100 LT/RS 92 - 98, R1150GS 98 - 02
Replacing OE part number 34112331631 - available for many models
Cost to rebuild both front calipers £150.00 Upgrade calipers for far below the cost of OEM.

Front Twin Caliper Kit (both calipers) - Part No. AI9409 RRP £150.00

Contact: WMD.
Web www.wmd-online.com
Email sales@wmd-online.com