KB Pistons Forged Alloy 10.5:1 .010" Oversized Piston Kit - Harley Twin Cam 88 to 95ci
About Kb Pistons
KB Performance Pistons builds hypereutectic and forged pistons for American V-twin engines, and is a long-standing choice for big-bore and stock-replacement rebuilds where budget and durability both matter.
Upgrade your Twin Cam 88 engine to a 95 cubic inch displacement with this KB Pistons forged alloy piston kit. Featuring a 10.5:1 compression ratio and a .010 inch oversized bore, these pistons are engineered for riders seeking serious performance gains. Their robust construction ensures durability even under the most demanding riding conditions, making them ideal for high-output builds.
Why riders pick this
- Convert Twin Cam 88 to 95ci with 10.5:1 compression
- Durable 4032 forged alloy with 11% silicon
- Enhanced crack resistance for high-performance use
- Coated skirts for reduced friction and improved wear
- Complete kit with rings, wrist pins, and wrist pin locks
- Ideal for power-adder equipped street or race bikes
For riders pushing the limits of their Twin Cam 88, a big bore conversion to 95 cubic inches is a common path to more power. This KB Pistons forged alloy piston kit provides the necessary components, with a 10.5:1 compression ratio and a .010 inch oversized bore. Precision-machined from 4032 forged alloy with an 11% silicon content, these pistons are designed to offer superior crack resistance, especially crucial when running power adders or higher compression tunes. They are a solid choice for both aggressive street riding and dedicated race applications.
Built for Demanding Engine Builds
- Constructed from 4032 forged alloy with high silicon content
- Exceptional crack resistance against detonation and pre-ignition
- Coated skirts reduce friction and enhance piston longevity
- Includes all rings, wrist pins, and wrist pin locks for a complete setup
- Designed for Twin Cam 88 to 95ci conversions
Reliability Under Pressure
When you're upgrading your Twin Cam, confidence in your internal components is key. These KB Pistons provide that assurance, built to handle the increased stresses of a higher-compression, larger-displacement engine. The included rings, wrist pins, and wrist pin locks simplify the assembly process, giving you a comprehensive solution for your big bore project. Pair them with a performance cam and a proper dyno tune for maximum power delivery.
Specifications
- Brand: KB Pistons
- Manufacturer Part #: KB906C.010
- UPC: 800745152800
- Compression Ratio: 10.5:1
- Oversized: .010
- Material: 4032 forged alloy
- Weight: 2.6 lbs per pair
- Country of Origin: Mexico
Common questions
Will these pistons require cylinder boring?
Yes, these pistons feature a .010 inch oversized bore and are intended for Twin Cam 88 cylinders that have been bored out to 95 cubic inches, requiring machine shop services.
Are these pistons compatible with forced induction systems?
Absolutely. The 4032 forged alloy construction with 11% silicon content is specifically engineered to provide superior crack resistance under detonation, making them ideal for supercharged, turbocharged, or nitrous-fed engines.
What components are supplied with this piston set?
This kit comes complete with a pair of forged pistons, all necessary piston rings, wrist pins, and wrist pin locks, providing everything you need for the piston assembly.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | Kb Pistons |
| TYPE | Piston kits & Components |
| SKU | 824-01508 |
| WEIGHT | 2.6 lb |
