The Wiseco 90.5mm bore ring compressor sleeve is an engine-building tool that squeezes the piston rings into their grooves so the piston can be pushed into a cylinder bore of that size.

Wiseco offers a range of performance accessories to help you get your performance rebuild done right, including hour meters, honing brushes, ring compressors, piston components, carburetor jets, and more.

Features

• Let Wiseco help you get your rebuild done right with its proven performance accessories!
• Hard-anodized and Teflon coated for low friction and prolonged wear resistance
• Sleeves have smooth radius that tapers down to the specific bore size
• Greatly reduces difficulty of installing high-performance oil rings
• Compresses the piston rings smoothly and evenly
• Laser-marked with size indication

Part number: RCS09050