HKS Capacity Upgrade Kit FA24 2.5L High Comp Step 1 Piston Full Kit - 21004-AT008

Capacity upgrade kit (Step 1) that takes the FA24 from 2,387 cc to 2,498 cc (2.5L), high compression.

• Piston kit: A2618 material for high-temperature strength, low pin height so no service holes are needed, 2-layer molybdenum coating, 340 g (stock 367 g)
• Piston head cavity shaped for direct injection atomization; crown keeps tumble flow; uneven crown allows a high-lift camshaft
• Step 1 conrods: exclusive long-stroke high-strength split-type I-beam rods; dedicated crank pin size, no engine-side modification
• Forged crankshaft with dedicated pin journal size
• Bore 94 mm (stock 94 mm), stroke 90.0 mm (stock 86.0 mm), displacement 2,498 cc (stock 2,387 cc)
• Compression ratio with stock head: 12.2 with the 0.6 mm stock gasket, 11.8 with the 0.8 mm HKS grommet gasket, 11.3 with the 1.2 mm HKS grommet gasket
• Step 2 (21004-AT009) uses billet conrods and suits high-torque turbo cars

Fits:

• Toyota GR86 / Subaru BRZ FA24 engine (HKS Japan)

HKS resources:

• Product page (HKS Japan)

Stocked and shipped from Calgary by Boost Factory.

Contact us if you are unsure of fitment or Size HERE