Indian Challenger Big Bore Kits
Unleash the full potential of your Indian Challenger with our high-performance Big Bore Kits, available in 112” and 116” configurations. Designed for riders who demand more power, torque, and throttle response, each kit includes premium pistons and a head/base gasket set to ensure a seamless installation and dependable performance.
Choose the option that works best for you—send in your OEM cylinders for expert big bore machining and plating, or purchase a ready-to-ship set from our shelf (when in stock) with a refundable core charge. Once you return your OEM take-off cylinders, your core charge will be refunded—making it easy to upgrade with minimal downtime and maximum performance.
Indian Challenger 116" Big Bore Kit
Take your Indian Challenger to the next level with our 116” Big Bore Kit, engineered for maximum performance, stronger mid-range pull, and aggressive throttle response. This package combines precision machining with premium components to deliver serious horsepower gains while maintaining long-term durability.
What’s Included:
Precision overbore service to OEM factory cylinders: 4.400” bore size (116 cubic inch)
Closed deck conversion for added strength and stability under high-performance conditions
Advanced Nickel Silicon Carbide (NSC) plating process
Mahle 12.75:1 forged piston kit
Cometic head and base gasket kit
.027” MLX head gasket
.010” base gasket
Specifications:
Bore Size: 4.400” (116 cubic inch)
Compression Ratio: 12.75:1
Two Ordering Options:
Option 1 – Send In Your OEM Cylinders
Send us your OEM factory cylinders and we will perform the complete overbore, closed deck conversion, and NSC plating service as part of this kit.
Option 2 – Purchase a Core Set (When in Stock)
Buy a pre-machined core set from our shelf to minimize downtime.
A $600 core charge will be added at purchase. Once we receive your OEM take-off cylinders and verify they are OEM, stock bore size, and in useable condition, your $600 core charge will be fully refunded.
Note: Your motorcycle must be professionally tuned after installation of this kit to ensure proper performance, reliability, and engine longevity.
Indian Challenger 112" Big Bore Kit
$1,699.95
Upgrade your Indian Challenger with our 112” Big Bore Kit, delivering increased horsepower, stronger torque, and aggressive throttle response while maintaining OEM reliability.
What’s Included:
Precision overbore service to OEM factory cylinders: 4.380” bore size (112 cubic inch)
Closed deck conversion for added strength and stability under high-performance conditions
Advanced Nickel Silicon Carbide (NSC) plating process
High-performance forged piston kit
Complete head and base gasket set
Specifications:
Bore Size: 4.380” (112 cubic inch)
Compression Ratio: 12.5:1
Two Ordering Options:
Option 1 – Send In Your OEM Cylinders
Send us your OEM factory cylinders and we will perform the complete overbore and NSC plating service as part of this kit.
Option 2 – Purchase a Core Set (When in Stock)
Buy a pre-machined core set from our shelf to minimize downtime. A $600 core charge will be added at purchase. Once we receive your OEM take-off cylinders and verify they are OEM, stock bore size, and in useable condition, your $600 core charge will be fully refunded.
This flexible process allows you to choose the option that best fits your build schedule while ensuring top-tier performance and quality.
