Name: 88cc Race Head Vintage Big Bore Kit for Honda Z50 & CT70
Brand: R1 Industries
SKU: 88cc-race-head-vintage-big-bore-kit-for-honda-z50-and-ct70-1
Availability: InStock

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88cc Race Head Vintage Big Bore Kit for Honda Z50 & CT70

Select Model

From $121.97

Original: $348.49

-65%

88cc Race Head Vintage Big Bore Kit for Honda Z50 & CT70—

$348.49

$121.97

Select Model

From $121.97

Original: $348.49

-65%

88cc Race Head Vintage Big Bore Kit for Honda Z50 & CT70—

$348.49

$121.97

The Story

Description Vehicle Fitment

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.

88cc

Displacement

52mm

Piston Size

25/22mm

Valve Size

Bolt-On

Installation

✓ Race Head with upgraded 25/22mm stainless steel exhaust valve

Improved airflow and performance

✓ Lightweight aluminum cylinder with steel sleeve and oversized cooling fins

Efficient heat dissipation

✓ 52mm high-compression piston with rings, pin, & clips

Enhanced power output

✓ High-performance race camshaft and Honda cam sprocket

Optimized valve timing

✓ 20mm Performance Carburetor Assembly

Includes carb, intake, heatstop, gaskets, hardware, throttle cable, and air filter

🚀

Massive Power Increase
Experience a significant boost in acceleration and top-end speed.

⚙️

Engine Revitalization
Wake up your stock engine with modern performance technology.

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Complete Kit Included
Comes with all necessary parts for installation, including a performance carburetor assembly.

💡

High Performance Camshaft
Optimized for maximum power output and throttle response.

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.

Z50/CT70 Big Bore Kit vs. Stock

STOCK ENGINE

✗ Limited power output
✗ Slow acceleration
✗ Lacks low-end torque
✗ Outdated technology
✗ High-performance limitations

⚡ 88cc RACE HEAD KIT

✓ Significant power gains
✓ 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.

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Expert Support

🏆

Quality Guaranteed

⭐

Customer Favorite

📦

Secure Packaging

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.