Vintage Stage 2 88cc Big Bore Kit & Carb for Honda Z50/CT70/ATC70

Unleash the Power of Your Vintage Honda: Stage 2 88cc Big Bore Kit

Double your stock horsepower and dominate the trails with this comprehensive Stage 2 88cc Big Bore Kit and 20mm Carburetor upgrade for your vintage Honda Z50, CT70, ATC70, TRX70, SL70, or XL70.

What’s in the Box

Why Riders Upgrade

Z50/CT70 vs. Stock or Generic Options

Common Questions

What is this kit designed for?
This kit is specifically designed to upgrade the performance of vintage Honda Z50, CT70, ATC70, TRX70, SL70, and XL70 models.

Will I need special fuel for this kit?
No, the high-compression piston is designed to run efficiently on standard pump gasoline.

How much horsepower can I expect to gain?
This kit is designed to easily double the stock horsepower of your vintage Honda motorcycle.

What is included in the carburetor assembly?
The 20mm carburetor assembly includes the carburetor, intake manifold, heatstop, gaskets, mounting hardware, wrench, air filter, and throttle cable.

What Riders Are Saying

This kit totally transformed my old Z50! It has so much more power now, it feels like a new bike. Installation was straightforward. Highly recommend!
— Mike S., California

Amazing upgrade for my CT70. The added torque is incredible, making hills a breeze. The 20mm carb really wakes it up. Great value for the performance gain.
— Sarah K., Texas