KEITH BLACK PISTONS Std Dome Top Pistons with 10.5:1 Compression Ratio. Fits Twin Cam Twin Cam 2007-2017 with 103ci Engine & Big Bore 96ci to 103ci Conversion.

Description

Features & Benefits:-

* Bore = 3.875in.

* Stroke = 4.375in.

* Forged 4032 Alloy is an 11% silicon alloy that is formed in a forging press then fully machined

* Best resistance to cracking in hi-comp performance applications

* Require .001in. wider piston to wall clearance

* Anti-Friction skirt coating.

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

Tech Tips:-

* 10.5:1 Compression Ratio with 85cc Head Chamber Volum