KB Pistons Forged Alloy 10.5:1 .020" 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.
Achieve a significant performance boost for your Twin Cam 88 engine with this KB Pistons forged alloy piston kit, designed for a 95 cubic inch big bore conversion. Featuring a 10.5:1 compression ratio and a .020 inch oversized bore, these pistons are built for riders demanding maximum power and resilience. Their advanced construction ensures they can handle the stresses of high-performance riding, whether on the street or the track.
Why riders pick this
- Upgrade Twin Cam 88 to 95ci with 10.5:1 compression
- Forged 4032 alloy with 11% silicon for high strength
- Superior crack resistance, ideal for power adders
- Coated skirts reduce friction and piston noise
- Includes wrist pins, wrist pin locks, and full ring set
- Engineered for street and race applications
When increasing the displacement and compression of your Twin Cam 88 to 95 cubic inches, choosing the right pistons is crucial for longevity and performance. This KB Pistons forged alloy kit offers a 10.5:1 compression ratio and a .020 inch oversized bore, providing a robust foundation for your engine build. Crafted from 4032 forged alloy with an 11% silicon content, these pistons are engineered for superior crack resistance, particularly under the extreme conditions of detonation or pre-ignition. They are a prime choice for high-performance street bikes and race applications, especially those utilizing power adders.
Uncompromising Strength and Durability
- Premium 4032 forged alloy with 11% silicon for extreme strength
- Enhanced crack resistance against detonation and pre-ignition events
- Coated skirts reduce friction, minimize piston noise, and extend engine life
- Includes wrist pins, wrist pin locks, and a complete ring set
- Optimized for Twin Cam 88 to 95ci big bore conversions
Built for the Toughest Demands
These KB Pistons are more than just replacement parts; they are a performance upgrade designed to elevate your Twin Cam's capabilities. The comprehensive kit includes wrist pins, wrist pin locks, and a complete ring set, ensuring a seamless and reliable installation. Whether you're planning a cam swap, cylinder head work, or adding forced induction, these pistons provide the necessary internal strength to support your power goals and deliver consistent, hard-hitting performance.
Specifications
- Brand: KB Pistons
- Manufacturer Part #: KB906C.020
- UPC: 800745152824
- Compression Ratio: 10.5:1
- Bore Oversized: .020 inch
- Engine Application: Twin Cam 88 to 95ci
- Weight: 2.6 lbs
- Country of Origin: Mexico
Common questions
Will my cylinders need to be bored for these pistons?
Yes, these pistons are .020 inch oversized and require your Twin Cam 88 cylinders to be bored out to 95 cubic inches by a qualified machine shop for proper fitment.
Are these pistons suitable for turbocharged or supercharged engines?
Absolutely. The 4032 forged alloy with its 11% silicon content is specifically chosen for its superior crack resistance under detonation and pre-ignition, making these pistons an excellent choice for forced induction setups.
What is included with the purchase of these pistons?
This kit comes complete with a pair of forged pistons, a full set of piston rings, wrist pins, and wrist pin locks, providing everything needed for piston installation.
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 | 824-01509 |
| WEIGHT | 2.6 lb |
