The heavy-duty piston ring service set is a core, complete mechanical solution designed for professional engine rebuilds and cylinder restoration. This highly precise kit includes every critical component for the safe cleaning, expansion, compression, and installation of piston rings, minimizing the risk of fragile ring breakage or destructive scratching of the bore diameter.

The set of three ratcheting band compressors handles pistons of different sizes with precise structural grip. The spring-loaded ring expander pliers provide simple, distortion-free opening of the rings. The multi-blade groove cleaning tool effectively removes hardened carbon buildup from the ring grooves, ensuring flawless oil sealing. The kit is packed in a blue molded protective carrying case.

• Piston ring band compressors (3 pieces):
• 1x Height 3" (75mm), capacity range: 53 – 125mm
• 1x Height 3-1/2" (90mm), capacity range: 90 – 175mm
• 1x Height 4" (100mm), capacity range: 90 – 175mm
• Piston ring expander pliers: 1x piece, capacity: 50 – 100mm
• Ring groove cleaning tool: 1x piece, multi-adjustable capacity: 2" – 5" (51 to 127mm)
• Interchangeable cutting blades (3 pieces):
• Blade 1: tracks from 1/16" to 3/16"
• Blade 2: tracks from 2.0mm to 4.5mm
• Blade 3: tracks from 1.2mm to 5.5mm
• Supplementary hardware: 1x L-shaped offset drive handle (flat / Phillips compatible tip)
• Storage unit: shock-resistant blue, made from high-density molded case

Made in China.