Unleash Serious Power: 88cc Stage 2 Big Bore Kit for Honda XR70 & CRF70

Elevate your Honda XR70 or CRF70 to new heights with the Stage 2 88cc Big Bore Kit from 50 Caliber Racing. Engineered for significant performance gains, this kit delivers approximately double the horsepower of your stock engine, transforming your ride into a powerhouse on the trails. Designed with durability and performance in mind, it’s the ultimate upgrade for riders seeking exhilarating acceleration and increased capability.

What’s in the Box

Why Riders Upgrade

Stage 2 Big Bore Kit vs. Stock Honda 70

Common Questions

What is the main benefit of this kit?
The primary benefit is a significant increase in horsepower, approximately doubling the stock output, for a much more exhilarating riding experience.

Do I need special fuel for this kit?
No, the high-compression piston is designed to run on standard pump gasoline, making it convenient and cost-effective.

Is this a difficult installation?
While it requires mechanical skill, the kit is designed for relatively straightforward installation. However, installing the oil pump during this process can save time and effort later.

What is included in the Stage 2 kit?
The kit includes a lightweight aluminum cylinder with a steel sleeve, a 52mm high-compression piston kit, a full gasket set, a 20mm performance carburetor assembly, and a performance camshaft.

What Riders Are Saying

This kit completely transformed my XR70! The power difference is unbelievable, and it still runs great on pump gas. Installation was straightforward with the included instructions. Highly recommend!
— Mark S., California

Got this for my CRF70 and wow! It's like a whole new bike. So much more torque and top end. The carb kit was a great addition too. Worth every penny for the performance upgrade.
— Jessica R., Texas