25mm Exhaust   Hot Street  283° Intake / 274° Exhaust   11

Includes external dust boot for added durability

- 1x High Performance Exhaust Rocker Arm Shaft

Seat Pressure Options:

20-1990-03

Mahle Motorsport PowerPak Piston Set, BMW N54 Compression Ratio:10.2:1 25mm Exhaust Hot Street 283°The MAHLE Motorsport PowerPak kit is their high volume shelf stock program developed for high performance enthusiasts. These PowerPak pistons are made from 2618 alloy to allow for increased detonation resistance. PowerPak Features: Forged piston for performance applications Fully machined crown Grafal anti Friction coating on skirts reduces drag, scuffing, friction and cylinder bore wear; reduces piston noise. Phosphate coated to reduce micro welding