A compact engine upgrade for motorised bicycle conversions, CDHPOWER Racing Reed Valve Kit is designed to improve intake behaviour on small two-stroke engines. Enthusiasts and home mechanics will appreciate simpler fitment and sharper throttle response. Will the kit match common 66CC and 80CC setups and suit windowed-piston builds?
⚡ At a Glance
- • Flow Control: Compatible with normal piston and cylinder configurations
- • Best for: DIY mechanics and motorised bicycle builders using small two-stroke engines
- • Not ideal for: Engines with stud spacings other than 32 mm or 40 mm
Replacement racing reed valve kit for small two-stroke bicycle engines. Includes two neck length options that simplify fitment across different intake layouts.
Sharper throttle response – with racing reed valve design
Reed valve is described as working well on normal pistons and cylinders and giving better performance with windowed pistons. The valve allows one-way intake flow that helps manage the intake pulse in two-stroke setups.
Sharper throttle transitions and a more responsive midrange for 66CC/80CC motorised bicycle engines, useful during acceleration and load changes.
Dual-fit compatibility – with support for 40 mm and 32 mm stud spacing
Product description lists suitability for cylinders with 40 mm and 32 mm stud spacing and is presented as a 2-in-1 kit for 66CC/80CC gas motorised bicycles. Fitment aligns with common conversion kit standards.
Simplifies parts selection for popular conversion builds, reducing the need to source alternative reed mounts or adapters.
Fitment flexibility – with two neck length options (1.65 inch and 1.06 inch)
Length of neck is specified as 1.65 inch maximum and 1.06 inch minimum, allowing two distinct reach profiles. Neck lengths alter the intake geometry and clearance to carburettor or intake stubs.
Neck choices help match carburettor alignment and intake layout, making installation neater and reducing interference with surrounding components.
✨ The 4 Key Reasons for CDHPOWER Racing Reed Valve Kit
- Reed valve construction – Enhances intake flow for snappier throttle response under load
- 2-in-1 fit for 66CC/80CC – Works with common small-capacity motorised bicycle engines without modification
- Two neck lengths – Choose between 1.65 inch and 1.06 inch for better carb alignment
- Windowed-piston friendly – Optimised for windowed piston setups to yield extra performance gains
📋 Technical Details at a Glance
- Category: Home Improvement
- Brand: CDHPOWER
- Product ID: B06Y655N3Q
- Fitment: 2-in-1 kit for small two-stroke motorised bicycle engines
- Compatible stud spacing: 40 mm and 32 mm
❓ Frequently Asked Questions
Q: Will this reed valve fit my cylinder?
A: Suitable for cylinders with 40 mm and 32 mm stud spacing, so confirm your cylinder's stud centres before purchasing.
Q: Can it be used on 66CC and 80CC engines?
A: Yes, the listing describes the kit as 2 in 1 for 66CC and 80CC gas motorised bicycles.
Q: Is performance better with a windowed piston?
A: The description notes the reed valve works well on normal pistons and cylinders, with better performance when paired with a windowed piston.
🏆 Our Verdict
Reed valve kit is suitable for home mechanics and racers working on small two-stroke motorised bicycle conversions, particularly common 66CC and 80CC setups. Dual-fit compatibility and two neck length options make fitment and tuning more straightforward. Long-term value depends on correct fitment and matching piston geometry, especially when used with windowed pistons.
