Pistons
S&S CYCLE Piston Kit - High Compression - 80" Stock Motor - +.020
Brand: S&S CYCLE
SKU: P1210394394256
$410.95
$382.73
Taxes and shipping calculated at checkout.
Piston Kit 80" Stock Big Twin
Select a vehicle to confirm fitment against the active storefront filter.
Only 3 left in stock
Free shipping on orders over $99.99
Guaranteed Low Price
Product Details
Highlights
- For 80" stock big twin motors.
- Forged pistons for superior strength.
- Piston kits include set of pistons, rings, wristpins, and clips.
- Wrist pin deck height 1.270".
- Made in the U. S. A.
- Requires the use of connecting rods with a rod length of 7.440"(standard length OEM #24281-74A connecting rods); use of earlier connecting rod with rod length of 7.470" (OEM # 24281-41A) will result in a slight increase in the compression ratio of about one-halfpoint, and may also result in clearance problems (check all piston to cylinder head clearances carefully when using early style rods).
These 3-1/2" +.020" bore high compression pistons fit 1979-'84 74" HD big twin engines, producing 9:1 compression with stock unmodified cylinder heads.. The modern alloys used in these pistons, coupled with the advanced skirt profiles, allow them to be fit tighter resulting in low engine noise and long engine life. In the past, this could only be achieved with weaker cast pistons. S&S will fit these pistons to your existing cylinders (when purchasing new cylinders, pistons can be fit to them as an option).
Specifications
| Bore - Oversize | +0,020" |
|---|---|
| Bore - Oversize Imperial | +0.020" |
| Bore Size Imperial | 3.520" |
| Compression Ratio Imperial | 9.0:1 |
| Displacement | 80" |
| Piston Material | Forged |
| Riding Style | Street |
| Stroke Length Imperial | 4-1/4" |
| Type | High Compression |
| Units | Kit |
Reviews
Rider reviews and ratings
Based on 0 reviews
Rider Feedback
Share your experience
Reviews stay local to this P1DS store and help other riders make faster decisions.
Signing in is optional. Guest reviewers only need a name and email, and the email is never shown publicly.
No reviews yet
Be the first rider to share how this product fits, performs, and holds up.
