Wiseco RCS40000 4in Bore Black Anodized Ring Compressor Sleeve

Wiseco ring compressor sleeves are forged in-house in the USA and are a precision solution to assist in your high-performance engine build.

• Hard-anodized and Teflon coated for low friction and prolonged wear resistance
• Sleeves have smooth radius that tapers down to the specific bore size
• Compresses the piston rings smoothly and evenly
• Greatly reduces difficulty of installing high-performance oil rings
• Laser-marked with size indication