Moderate — 2–4 hours
Description
The pistons have a 4.000" bore and a compression height of 1.599". The top of the piston is a -4.0cc dish with four valve reliefs, measuring 0.030" deep and 2.500" in diameter. The ring grooves are 5/64" for the compression and second rings, and 3/16" for the oil ring.
Fitment
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Specifications
| Brand | SEALED POWER |
| Part Number | S03T UMK6086CP |
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.
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