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Ultimate Big Bore 2150cc / Pror Series [AKWsbYoE]

$139.99 $447.99 -69%

Big Bore Cylinder Upgrade for Enhanced Performance The Bikeman Big Bore Cylinder is a game-changer for off-road enthusiasts seeking to unlock the full potential of their engines. Designed for massive power, this upgrade is perfect for those looking t

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Big Bore Cylinder Upgrade for Enhanced Performance

The Bikeman Big Bore Cylinder is a game-changer for off-road enthusiasts seeking to unlock the full potential of their engines. Designed for massive power, this upgrade is perfect for those looking to add a turbo or simply enhance the stock engine's performance. With its bored and sleeved cylinders, the Big Bore Cylinder provides a robust foundation for increased horsepower and torque.

Custom Engine Components for Maximum Power

The Big Bore 2150cc and 2300cc Stroker Kits come with a comprehensive set of custom components to ensure peak performance. Each kit includes bored and sleeved cylinders, high-quality pistons, rings, wrist pins, and circlips. The 2150cc kit offers a 93mm bore, while the 2300cc kit boasts a 96mm bore, providing a choice of 2.13L or 2.26L displacement. The Polaris Pro R kit includes a 4340 billet crank, 78mm stroke, and BC ProH2K rods, along with custom CP or BME pistons, allowing for a personalized bore and compression ratio.

Complete Kit for a Seamless Installation

The Big Bore Cylinder kits are designed for a seamless installation process. They include all necessary components, such as HD exhaust springs, retainers, keepers, and additional exhaust and intake valves for optimal airflow. The kits also come with CNC head porting, high-performance cams, and valve shims, ensuring a complete and powerful engine upgrade. To make the installation process even easier, Bikeman Performance Plus provides a work order form and detailed instructions, including torque specifications and cam installation guidelines. With this kit, you can expect a significant boost in horsepower and torque, making your off-road adventures more thrilling than ever.

What Our Customers Say

December 29, 2025

Absolutely no complaints!

A great product. A very, very, very big thank you.

- Gwenda V..

December 29, 2025

Absolutely no complaints!

The product quality is absolutely so very excellent.

- Rhiannon T..

December 29, 2025

Absolutely no complaints!

Very happy with this product's very, very high quality.

- Cynan T..

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