Wiseco Tapered Billet Aluminum Ring Compressor Sleeve

Wiseco Tapered Billet Aluminum Ring Compressor SleeveFeatures: Machined from Wiseco sleeve forgings to offer the same toughness as Wiseco's forged pistons. Hard anodized and PTFE coated for low friction and prolonged wear resistance. Sleeves have a smooth radius that tapers down to the specific bore size. Compresses the piston rings smoothly and evenly. Greatly reduces the difficulty with installing thin high performance oil rings. Available in a WIDE array of bore sizes. Order the ring compressor for

Features:

• Machined from Wiseco sleeve forgings to offer the same toughness as Wiseco's forged pistons.
• Hard anodized and PTFE coated for low friction and prolonged wear resistance.
• Sleeves have a smooth radius that tapers down to the specific bore size.
• Compresses the piston rings smoothly and evenly.
• Greatly reduces the difficulty with installing thin high-performance oil rings.
• Available in a WIDE array of bore sizes.  Order the ring compressor for your exact bore size, after any over-boring, of course.  

A few common sizes:

• 85mm - a stock Zetec 2.0 found in Focus, Contour, ZX2, etc is 84.8.  When overbored .007", this brings the bore to 85mm
• 85.5 - Zetec bore to .027" oversize
• 87.5mm - Duratec / MZR and Ecoboost 4 cyl engines, 2.0 and 2.3 L.  Stock bore
• 88mm - Duratec and Ecoboost 4 cyl engines, 2.0 and 2.3 L over bored .5mm or .01968" - might be stated ".020" over" nominal
  
• 88.5 - Duratec and Ecoboost 4 cyl engines, 2.0 and 2.3 L l  - over bored .5mm or .03937" - might be stated ".040" over" nominal.  Typically, overboring this amount would require the block to be resleeved.
• 89mm - Duratec / MZR 2.5 4 Cylinder Liter stock bore 
• 89.5mm -  Duratec / MZR 2.5 4 Cylinder Liter over bored .5mm or .01968" - might be stated ".020" over" nominal