Overview
Note: This is a special order item- Allow 14 Days for delivery
Keith Black hypereutectic pistons are made from 390 aluminum alloy and heat-treated to T6 standards, which makes them 30 percent stronger than ordinary untreated hypereutectics. Their 100 percent CNC-machined crowns, high upper compression-ring location, gas-accumulator groove, drilled oil returns, and spiral-lock retainer grooves make these pistons outstanding for performance applications. They have a lightweight, rigid-rib skirt design that stabilizes the piston in the bore. All of this adds up to pistons that fit tighter than forged types, provide improved oil control, reduce blowby, increase ring life, eliminate cold start-up knocking, and won't cost you an arm and a leg!
| Manufacturer Specifications | |
|---|---|
| Piston Rings Included: | No |
| Bore (in): | 4.040 in. |
| Bore (mm): | 102.616mm |
| Stroke: | 3.580 in. |
| Engine Stroke Type: | Stock |
| Rod Length: | 6.123 in. |
| Piston Style: | Flat top, with two valve reliefs |
| Piston Material: | Hypereutectic aluminum |
| Compression Height (in): | 1.675 in. |
| Piston Head Volume (cc): | +5.00cc |
| Wrist Pin Style: | Press-fit or floating |
| Wrist Pin Retainers Included: | Yes |
| Wrist Pin Included: | Yes |
| Pin Diameter (in): | 0.984 in. |
| Piston Ring Thickness: | 5/64 in. x 5/64 in. x 3/16 in. |
| File Fit: | No |
| Gapless: | No |
| Quantity: | Sold as a set of 8. |
Customer Reviews
No reviews to display
Additional Information
| SKU | 92995 |
|---|---|
| Factory Part Number | KB107-040 |
| Factory Comparison | Direct Replacement |
| Sale Unit | Set |