6-Bolt DSM (.020 over, 85.5mm, 8.5:1) $450 6-Bolt DSM (.040 over, 86mm, 8.5:1) $450 7-Bolt DSM & Evo (.020 over, 85.5mm, 8.5:1) $450 7-Bolt DSM & Evo (.040 over, 86mm, 8.5:1) $450 6-Bolt DSM [4G64 Stroker] (.020 over, 85.5mm, 9.5:1) $450 6-Bolt DSM [4G64 Stroker] (.040 over, 86mm, 9.5:1) $450 7-Bolt DSM & Evo [4G64 Stroker] (.020 over, 85.5mm, 9.5:1) $450 7-Bolt DSM & Evo [4G64 Stroker] (.040 over, 86mm, 9.5:1) $450

The MAHLE PowerPak is a complete, race proven piston assembly kit composed of hand deburred, all forged, performance coated pistons, high quality steel pins, round wire locks and low drag performance rings.

Performance coatings include a phosphate dry lubricant that is used to protect against ring micro-welding and pin galling during initial startup and break in. For added performance, MAHLE applies it's proprietary Grafal anti-friction coating to each piston skirt.

The MAHLE PowerPak was designed as a completely finished drop-in piston assembly. Other than filing the included performance ring set, everything else is done for you.

- Forged from 4032 low expansion aluminum alloy for high strength & reduced piston to wall clearance - Forced Pin Oiling - Precision Pin Fitting & Race Proven Round Wire Locks included - 22mm high quality steel wrist pin (112 grams) included - Precision Ring Grooves for 1.2mm, 1.2mm, 2.8mm rings included Piston Specifications:
Stroke: 88mm
Rod Length: 150mm
Pin Diameter: 21mm (6-Bolt), 22mm (7-Bolt)
Compression Height: 34.7mm
Dome Volume: -13
Weight in Grams: 85.5mm = 293, 86mm = 298
Compression Ratio: 8.5:1

6-Bolt DSM.

7-Bolt DSM & Evo VIII-IX.