KTM Brake Reservoir Cooler BRONZE IN COLOUR FITS All KTM 4 & 2 Stroke Models 2003-2009 The rear brake master cylinder / reservoir assembly is a weight saving design, but it is prone to boil the oil in extreme or constant use conditions. The system temperature rises and is not able to dissipate heat fast enough. As the heat rises, your feel or modulation suffers. If the brake fluid reaches the boiling point Major brake fade sets in. The SOLUTION: More brake fluid capacity and air-cooling, which will keep this heat build up to a minimum. This is a perfect application for the heat dissipating qualities of an Aluminium Cylinder with Lathed relieve cuts or Cylinder Fins. The same old scheme really, “ Air Cooling’. Maximum surface area is the goal here. So we designed in as many of these Cylinder Fins as possible. Type II Hard Anodise is applied to minimise contamination of the brake fluid. Supplied with fitted O-ring.