Canitu Thumb Throttle Adapter for E-Bikes — 37mm or 41mm Clamp, PETG with Stainless Screw

Canitu's upgraded thumb throttle adapter converts a twist-grip e-bike throttle into a comfortable thumb-operated control in under a minute.

Swap your wrist-twisting throttle for a thumb-friendly option without replacing your whole grip assembly. This adapter is engineered to clamp over common electric-bike twist throttles from brands like Rad, Lectric, Pedego, Himiway, Magicycle and others, offering a low-effort retrofit that preserves the original twist grip so you can switch styles any time.

How quickly can I install the Canitu thumb adapter?

Installation is designed to be fast and tool-light—most riders attach the adapter in under 60 seconds. A cinch strap and internal brass-threaded insert provide a secure, non-slip hold while the stainless steel 304 screw keeps the clamp tight during use.

• Quick clamp-on design—no handlebar disassembly required
• Stainless steel 304 screw for corrosion resistance
• Brass threaded insert for repeated tightening without wear

Will this adapter fit my e-bike throttle?

The adapter fits a range of common twist-grip throttle diameters used by popular e-bike manufacturers. Choose the correct size based on your bike year and model: older twist throttles around 37 mm and newer styles around 41 mm are supported, with the 2020 option recommended for RAD Runner models.

• Compatible brands: Rad, Lectric, Pedego, Himiway, Magicycle and more
• 37 mm and 41 mm diameter options to match throttle sizes
• Check model year guidance for RAD Runner fitment

What material and durability can I expect from this adapter?

Canitu uses PETG for the body—an engineering plastic that balances strength, environmental stability and ease of manufacture. The part is produced by integrated injection molding so it resists cracking and holds up under repeated use, while still being kinder to the environment during production than some alternatives.

• PETG construction for toughness and thermal resilience
• Integrated molding reduces weak points and improves longevity
• Hardware: stainless screw and brass insert for long-term reliability

How does a thumb throttle change my riding comfort?

Using a thumb throttle can reduce the wrist torque and gripping motion associated with twist throttles, which many riders find more comfortable on longer trips. The Canitu adapter lets you operate the throttle with a light thumb press while keeping both hands relaxed on the bars.

• Minimizes wrist rotation and hand fatigue
• Lets you maintain a relaxed grip during long rides
• Easy to switch back to twist style if preferred

Who is this for: Riders who want a simple, reversible way to convert an existing twist-grip throttle into a thumb throttle—especially owners of Rad, Lectric, Pedego, Himiway, Magicycle and similar electric bikes. It's ideal for commuters and recreational riders seeking improved comfort without replacing grips or electronics, and for anyone who wants a durable, quick-install solution backed by rugged hardware and PETG construction.