Wiseco Pistons K454X3903 Chevy LS 3.903b 4.125s 6.125r Pin .927 Dish 9.5:1
- Anti-detonation & pressure seal grooves
- ArmorGlide™ Skirt Coating
- Designed for use with aftermarket rods
- .150” wall pins & Spirolox® locks
- Premium GFX Rings Included
Box Content: Kit includes 8 forged pistons with rings, pins, and locks.
These pistons from Wiseco are for LS 4.100”/4.125” Stroker engines using aftermarket rods with .927” pin diameter and are suitable for normal aspiration, boost, and nitrous engines. They feature Wiseco's exclusive Diamond turned, ArmorGlide™ Skirt Coating for increased power and reduced piston rock. Pin upgrade recommended over 700HP, please contact us for details. Compression ratio calculation is based on .051” gasket at 0 deck (9.237”).
| APPLICATION | DETAILS |
|---|---|
| Engine Make | GM / Chevrolet |
| Application/Engine | Chevy LS 4.100 / 4.125 Stroker |
| Valve Angle | 15° |
| OEM Standard Bore Size | 3.898 in (LS1/LS6) |
| Fitment Notes | None |
| KIT SPECIFICATIONS | DETAILS |
| Brand | Wiseco |
| SKU | K454X3903 |
| Box Content | Kit includes 8 forged pistons with rings, pins, and locks. |
| Alloy | 2618 Forged Aluminum |
| Displacement | 395 / 6.5L |
| Bore Size in inches (Kit) | 3.903 in |
| Bore Size in mm (Kit) | 99.136 mm |
| Stroke | 4.125 in |
| Rod Length | 6.125 in |
| Pin Diameter | 0.927 in |
| Block Height | 9.240 in |
| Compression Height | 1.050 in |
| Head CC | 70cc |
| Compression Ratio | 9.5:1 |
| Additional Compression Ratio | 10:1 (65cc) / 9.8:1 (67cc) / 9.8:1 (68cc) |
| Piston Design | Dish |
| Crown Volume | -14 cc |
| Skirt Style | Wiseco Pro |
| Weight (Grams)** | N/A |
| Additional Product Features | These pistons come with a LS1,2,3,6,92 valve pocket design. |
| Recommended Rings | Wiseco #: 3905GFX |
| Rings Included | Yes |
| Included Pins | Wiseco #: S643 |
| Included Locks | Wiseco #: CS24 |
| Recommended Gasket | N/A |
| Warranty | Warranty limited to inspection prior to installation.* |