Std Flat Top Pistons with 8.6:1 Compression Ratio. Fits Big Twin 1984-1999 with Evo Engine.
$334.00 RRP (inc GST)
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
* 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.
MFR PART No: KB258.STD
ROLLIES PART No: KB258.STD