Description
Forged Piston Set
Forged-aluminum pistons for the Toyota 3S-GTE turbo — 86mm bore at 9.0:1 CR, with dual pin oilers, wrist pins and rings included.
86mmBore (STD)
9.0:1Compression ratio
22mmWrist pin diameter
4Pistons per set
Overview
A complete set of four CP-Carrillo forged-aluminum pistons machined for the Toyota 3S-GTE. Dished 9.0:1 crowns with four valve reliefs, standard bore (86mm), full-floating 22mm wrist pins and matched ring pack — designed to survive the high cylinder pressures of a boosted 3S-GTE build.
For 3S-GTE owners rebuilding or upgrading an MR2 Turbo or Celica All-Trac for higher boost, where cast OEM pistons are the weak link. The lower 9.0:1 ratio leaves headroom for aggressive turbo tuning.
Specifications
Bore86mm (3.386", STD)
Compression ratio9.0:1
Stroke86mm
Rod length138mm
Compression height34.925mm (1.375")
Wrist pin22mm, full floating
CrownDished with 4 valve reliefs
MaterialForged aluminum
Part numberSC7449 (set) / SC7449-1 (single)
Wrist pin part no.866-2250-15CP1C
What's in the box
- 4 forged pistons
- full-floating wrist pins
- spiral pin locks (866 063 SWL)
- ring set (CPN 3386)
Fitment
ApplicationToyota 3S-GTE
InstallRequires professional machining and assembly; verify piston-to-wall clearance before final fitment.
Listed for Gen 2/Gen 3 3S-GTE (MR2 SW20 Turbo, Celica All-Trac) — confirm engine generation, bore and oversize before ordering.
Best suited for
Turbo builds
High-boost tuning
Engine rebuild
9.0:1 is a boost-friendly low-compression ratio — intended for turbocharged 3S-GTE builds, not naturally aspirated setups.
Fast dispatchShips in 24–48h
Genuine productAuthentic CP-Carrillo
Easy returns10-day returns, unused items
Fitment helpWe'll confirm before you buy
Returns
Return within 7 days of purchase, provided the item is unused and in its original condition and packaging. Taxes are non-refundable.
We can’t take back parts that have been fitted or modified, unsealed electrical components, ECUs and sensors, opened gaskets, seals and o-rings, or clearance items. Parts we order in specifically for you can’t be returned for change of mind — we’ll tell you before you order if yours is a special order.
If a part is faulty, damaged in transit or isn’t what you ordered, we’ll put it right and cover the return shipping.
Please contact us before returning anything. Full terms are in our Refund policy.
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