KTM 89mm Rectangular Piston Ring for EXC/LC4 Models 1994-2007 - 57530032000

This 89mm rectangular piston ring is a genuine OEM part designed to maintain optimal engine compression and performance. As a critical component of the piston assembly, it ensures a tight seal against the cylinder wall to prevent combustion gases from escaping. Using original KTM parts guarantees the correct material hardness and thermal expansion properties for your engine.

This part is compatible with an extensive range of KTM models from 1994 to 2007. It fits the KTM 400 EXC, SX, and LC4; 450 EXC, XC-W, and MXC; 520 and 525 EXC/MXC series; 540 SXS and SXC; 620 SC, Duke, and EGS; and the 640 LC4, Duke II, and Adventure models. This includes specialized versions like the Rallye Factory Replica and Six Days editions.

Manufactured to exacting standards, this rectangular ring offers superior durability under high-heat conditions. Its precise geometry helps reduce friction while maximizing power output throughout the RPM range. Replacing worn rings is essential for restoring lost power and preventing excessive oil consumption.

During installation, ensure the ring is oriented correctly with any markings facing upward as specified in your service manual. It is highly recommended to inspect the cylinder cross-hatching and measure the ring end gap before final assembly to ensure a perfect fit. Check compatibility list below to see if this part fits your motorcycle model.