Unleash Your Honda XR/CRF 50's Potential with the Stage 2 88cc Big Bore Kit
Upgrade your Honda XR50 or CRF50 from 1988 and newer with the Stage 2 88cc Big Bore Kit. This comprehensive kit is engineered to significantly boost your engine's performance, delivering approximately double the horsepower of a stock motor. Experience thrilling acceleration and enhanced power for an exhilarating ride.
Aluminum
Cylinder Material
What’s in the Box
✓ 88cc Lightweight Aluminum Cylinder
Features oversized cooling fins for efficient heat dissipation and cast-in mounts for aftermarket skid plates.
✓ High Compression 52mm Piston Kit
Includes rings, pin, and clips. Capable of running on pump gas.
✓ 20mm Performance Carburetor Assembly
Complete kit with intake, heatstop, gaskets, hardware, air filter, and long throttle cable.
✓ Performance Camshaft
Engineered for increased valve lift and duration.
✓ Head Gasket Kit
Includes all necessary gaskets for installation.
Why Riders Upgrade
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Massive Power Gains
Achieve approximately double the stock horsepower for a thrilling performance boost.
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Complete Kit Included
Comes with a high-performance carburetor, camshaft, piston kit, and all necessary gaskets for a comprehensive upgrade.
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Efficient Cooling
The aluminum cylinder features oversized cooling fins to ensure optimal heat dissipation and engine longevity.
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Pump Gas Compatible
The high-compression piston is designed to run on readily available pump gas, offering convenience without sacrificing performance.
In Stock & Ready To Ship
Processing: Packed with care before shipment
Tracking: Sent when shipped
Confirmation: Sent after checkout
Although rare, some delays may occur. We’ll keep you updated every step of the way.
Big Bore Kit vs. Stock Honda XR/CRF 50
STOCK HONDA XR/CRF 50
✗ Limited power output
✗ Standard acceleration
✗ Less efficient cooling
✗ Basic carburetor system
✗ Requires frequent revving for speed
⚡ 88cc STAGE 2 BIG BORE KIT
✓ Significant Power Increase
✓ Improved Acceleration & Torque
✓ Enhanced Cooling Efficiency
✓ Performance Carburetor Included
✓ Pump Gas Compatible
Common Questions
Does this kit require premium fuel?
No, the high-compression piston is designed to run on standard pump gas.
What is the horsepower gain?
This kit approximately doubles the horsepower of a stock Honda XR/CRF 50 engine.
Is an oil pump upgrade recommended?
Yes, a high volume oil pump is recommended and can be installed during the bore kit installation for optimal engine health.
What is included in the carburetor assembly?
The assembly includes the 20mm carburetor, intake, heatstop, gaskets, mounting hardware/wrench, air filter, and a long throttle cable.
What Riders Are Saying
Massive difference in power after installing this kit. My XR50 is now twice as fun to ride! Highly recommend for anyone looking for more performance.
— John D., California
The installation was straightforward and the included carburetor made tuning a breeze. The power increase is exactly what I was looking for. Great value for the performance gains.
— Sarah K., Texas
Ready to Double Your Horsepower?
Transform your Honda XR/CRF 50 with the Stage 2 88cc Big Bore Kit.
Elevate your off-road experience today.
