88cc Race Head Vintage Big Bore Kit for Honda Z50 & CT70
Product details
| Management number | 241279942 | Release Date | 2026/07/17 | List Price | US$121.97 | Model Number | 241279942 | ||
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Unleash Vintage Power: 88cc Race Head Big Bore Kit for Honda Z50 & CT70
Elevate your classic Honda Z50 or CT70 with the 50 Caliber Racing 88cc Big Bore Kit. Featuring an all-new Race Head with larger valves and improved airflow, this kit delivers performance comparable to larger Chinese 124cc engines, breathing serious new life into your vintage ride.
Z50/CT70 Big Bore Kit vs. Stock
✗ Slow acceleration
✗ Lacks low-end torque
✗ Outdated technology
✗ High-performance limitations
✓ Crisp acceleration
✓ Enhanced torque delivery
✓ Modern performance upgrade
✓ Outperforms larger engines
Common Questions
What is the displacement of this big bore kit?
This kit increases the engine displacement to 88cc.
What is included in the 20mm carburetor assembly?
It includes the 20mm carb, intake, heatstop, gaskets, mounting hardware, adjustable throttle cable, and an air filter.
Is this kit compatible with stock Z50 and CT70 models?
Yes, this kit is designed to upgrade your stock Honda Z50 and CT70 engines.
What are the valve sizes in the Race Head?
The Race Head features 25mm intake valves and 22mm exhaust valves.
What Riders Are Saying
This kit completely transformed my old Z50! It pulls so much harder now, feels like a completely different bike.
— Mark S., California
Installation was straightforward, and the performance gain is incredible for the size of the engine. Highly recommended for any vintage Honda enthusiast.
— Jessica T., Texas
Ready to Revitalize Your Vintage Ride?
Upgrade your Honda Z50 or CT70 with the 88cc Race Head Big Bore Kit.
Experience the thrill of increased power and performance.
Vehicle Fitment
Honda CT70Honda Z50
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