Keith Black Pistons KB258.STD Standard Flat Top Pistons w/8.6:1 Compression Ratio for Big Twin 84-99 w/Evolution Engine

Pistons; BT'84-99 STD 8.6:1 "Flat Top" - Evo Motor

Product Details

Features & Benefits:-

* Bore = 3.498in.

* Stroke = 4.250in.

* Hypereutectic Alloy is a cast 16% silicon content material.

* Perfect for air cooled engines.

* Low thermal expansion rate = tighter piston-to-cylinder clearance.

* Complete kit includes: two pistons, rings, wrist pins and clips.

* Replaces OEM # 21940-83

Tech Tips:-

* 8.6:1 Compression Ratio with 80cc Head Chamber Volume.

* Follow Ring Eng Gap & Piston to Cylinder Cle arances as per the supplied Manufacturers Instructions.

(KB258.STD)

**Please Note: The fitment information below has been generated as a guide and may not be 100% accurate. Please contact us if you require further assistance.

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