Engines and Components› Pistons and Piston Rings
Manley Performance
Manley 03-06 Evo 8/9 4G63T 85.5mm+.5mm Oversized Bore 8.5/9.0:1 Dish Single Piston w/ Rings
SKU: M004 617005C-1
Advanced — 4+ hours
Description
The pistons have a bore size of 85.5mm and are intended for an 88mm standard stroke. They offer a dish piston type, a dome volume of -12 cc, and a compression ratio of 8.5:1 for DSM engines and 9.0:1 for EVO engines when used with specific cylinder head volumes.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Manley Performance |
| Part Number | M004 617005C-1 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy