Product Details
Harley Davidson Breakout 2015, Hemi Dome Piston Kit by KB Performance Motorcycle®. Hypereutectic Alloy is a cast 16% high silicon content material that has very high thermal barrier properties along with a low thermal expansion rate. This alloy is perfectly suited for an air-cooled engine. Tight piston-tocylinder clearances are used to achieve better ring seal and a quiet running engine. Hypereutectics are best suited for Street Bikes using stock or mild compression ratios to 10.5:1 running on pump fuel. With the high silicon content, these pistons will resist skirt wear the best. Models that end in a "C" come with Anti-Friction skirt coating.
Notes
- Piston has an anti-friction skirt coating.
Specifications
| Alloy: 4032 |
| Bore Standard: 3.875" |
| Bore Standard: 98.4 mm |
| Comp. Ht.: 1.086" |
| Compression Ratio: 10.5:1 w85cc 9.5:1 with 95 |
| Crown: -5.4cc |
| Crown Type: Dome |
| Engine Disp Liters: 1688 |
| Engine Disp: 103" |
| Exhaust Valve Depth/Diameter: 0.163-1.820 |
| Intake Valve Depth/Diameter: 0.203-2.180 |
| Lock: PRJ100-3 |
| Oe Deck Height: 6.000 |
| Pin Diameter: 0.927" |
| Pin Diameter: 23.5 mm |
| Pin No: 0927x208K |
| Pin Type: Floating |
| Ring Set #: 2M4941 |
| Ring Sizes: 2-1.5mm, 1-2.5mm |
| Rod: 7.667" |
| Rod: 195 mm |
| Stroke: 4.375" |
| Stroke: 111.1 mm |
| Top Land: 0.163 |
| Weight: 361/106 |
| Piston Material: Forged aluminum |
| Wrist Pin Style: Floating |
| Top Ring Material: Iron |
| Top Ring Facing Material: Moly |
| Second Ring Material: Iron |
| Second Ring Facing Material: Cast iron |
| Oil Ring Material: Stainless steel |
| Gaskets Included: No |
| Connecting Rods Included: No |
| Quantity: Sold as a kit |
Features
- Expertly crafted from the highest grade materials
- Built for long-lasting dependability and unmatched quality
- Made with great care and extreme attention to detail
KB Performance® has carved out a niche for itself in the motorcycle industry by offering state-of-the-art high-performance pistons for Harley-Davidson and Indian bikes. Ideal for racing junkies, die-hard motocross riders and speed adrenaline fans, competition-grade KB Performance pistons are built with premium, high-strength Hypereutectic 390 alloy and Forged 4032 low expansion alloy to give you rock-solid durability and hardcore performance under the vigorous conditions of high revving speed conditions. KB Performance piston lineup goes the extra mile when it comes to incomparable reliability and terrific value. Advanced V-Twin performance piston technology married with the latest manufacturing techniques and rigorous quality standards put KB Performance products head and shoulders above the rest. They feature offset wrist pins to make your hog’s inner beast quieter and most pistons have coated skirts. KB Performance Low expansion alloy pistons will come in handy if you want a tighter piston to wall running clearance. With dependable KB Performance pistons, you can dress up your high performance beast to leave the competition in the dust!