Brand: HKS
Product: Forged Piston Kit and Connection Rod Set Step 2 - R35
Part Number: 21004-AN017

SPECIFICATIONS:
Included:
- Pistons Kit
- Connection Rod Kit
- Piston Pins and Piston rings Set

Bore x stroke (mm): 95.5 x 88.4
Compression Rate (e): 8.7 (with HKS 0.8 Head Gasket)
Displacement (cc): 3799

- Piston -
Bore Diameter (mm): 95.5
Compression Height (mm): 34.30
Concave Portion on Top (cc): 8.01
Material: Forged (No Hollow Channel)
Reference Weight (g): 420

- Piston Pin -
Size (mm): 23x60

- Rings -
Top B Size (mm): 1.2
Sec B Size (mm): 1.2
Oil B Size (mm): 2.0 (3 Pieces Type)

- Conrod -
Small-end dia. (mm): 23
Large-end dia. (mm): 59
Center Distance (mm): 165.1
Reference Weight (g): 734.6
Bolt: M9x1.0
Capable torque: 130

PRODUCT NOTES:
- HKS recommend to use this kit with other items of the GT800 Package.
- Honing Modification: Not required
- Full-Flow Modification: Not required

FEATURES:
Parts for Higher Engine Output:
- Factory replacement type piston & connecting rods kit with the standard bore size.
- To avoid piston land breakage, HKS pistons are made with forged material instead of casting like the factory pistons. The shape of STEP2 is the same as STEP1.
- HKS In-house test at 900PS confirmed the durability and safety.
- The setting range is widened by reducing the pressure rate from 9.0 factory rate to 8.7. This is effective to increase the engine output using the aluminum block specs and/or bigger cylinder bore.
- STEP2 piston's recess is 1mm deeper than a stock to best use with the STEP2 camshaft.

Factory Replacement Type:
- The weight of the connecting rod is the same as the factory since the affect of the V6 engines peculiar vibration should be considered.
- The piston is light-weighted to approximately 25g.
- The weight is optimized to install to the factory crankshaft so it is not necessary to use a dummy weight to balance.

Higher Reliability by In-house Design & Production:
- The best 3D profile for this piston was selected after various profile tests. The forged material exclusively for HKS was used.
- With the results of in-house analysis on the factory connecting rod, the durability is improved by approx. 46% maintaining the balance.
- All parts are MADE IN JAPAN.

Compatibility is from maker for JDM cars only. We don't guarantee fitment. Always do your own research before purchase. After-sale support does not include installation support.

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