Training Wheels for Stacyc KTM Husqvarna GAS GAS Harley-Davidson

In this review the Hardline Products training wheels are evaluated for riders who want a robust, adjustable stabilization solution for 12e and 16e balance electric bikes. The bottom line: these wheels are best for parents and builders seeking a US-designed, durable mount that keeps the stock floorboard in place while adding cornering tolerance and terrain absorption. Installation is straightforward for mechanically comfortable users and the included billet aluminum adaptor plate and fasteners make it a practical upgrade for several popular balance bike models.

Key Features

• Model compatibility: Fits Stacyc, KTM, Husqvarna, GAS GAS, and Harley-Davidson 12e and 16e balance bikes, providing a tailored fit for these specific frames.
• US design and assembly: Designed, engineered, assembled and tested in the USA to ensure attention to durability and fit quality.
• Billet aluminum adaptor: Mounts to the existing floorboard using a billet aluminum adaptor plate for stronger, more durable attachment than basic brackets.
• Adjustability: Wheel spacing and mounting options are adjustable so riders can tune stability for terrain and skill level.
• Factory floorboard retained: The stock floorboard remains in the factory position, preserving the original ride height and ergonomics.
• Hardware included: Fasteners are supplied so the kit is ready to install without sourcing extra parts.

Who It's For

This kit is for parents, small-vehicle builders, and riders who need a dependable set of training wheels for 12e or 16e balance electric bikes and who value a US-engineered mounting solution. It fits popular makes used by kids and hobbyists and is suited to those who want to keep the bike's floorboard in its stock position.

It is not for owners of the 16e Elite model, which is explicitly incompatible, nor is it ideal for someone who expects a totally universal mount for unrelated mini bikes without verifying fit. Buyers who are uncomfortable with basic mechanical installation may want professional help because correct mounting is important for durability.

Pros & Cons

Pros

• Solid mounting via a billet aluminum adaptor plate improves strength compared with simple brackets.
• Adjustable wheel spacing helps with cornering and absorbing terrain impact for a more confident ride.
• Designed, engineered and assembled in the USA, reflecting attention to manufacturing and testing processes.
• Includes fasteners and keeps the stock floorboard in factory position for a clean installation.

Cons

• Some users report bracket durability issues during installation, so care and correct tightening are necessary.
• Not compatible with the 16e Elite model, limiting fit to specific variants of the 12e/16e lineup.

Specifications

Compatible models	Stacyc, KTM, Husqvarna, GAS GAS, Harley-Davidson 12e/16e
Not compatible	16e Elite model
Design & assembly	USA designed, engineered, assembled and tested
Mount type	Billet aluminum adaptor plate to existing floorboard
Included	Fasteners included
Adjustment	Wheel spacing adjustable for terrain and rider skill

Our Verdict

The Hardline Products training wheels are a good value for buyers who need a strong, adjustable stabilizing kit for compatible 12e and 16e balance electric bikes. With US engineering, a billet adaptor plate and included fasteners, it delivers reliable performance for families and hobby riders, provided installation is done carefully and the 16e Elite incompatibility is observed.

Frequently Asked Questions

Will these fit a 16e Elite?
No. The kit is explicitly not compatible with the 16e Elite model.

Are fasteners included for installation?
Yes, the kit ships with fasteners so no additional hardware should be required for the intended floorboard mount.

Does the stock floorboard position change?
No, the stock floorboard stays in the factory position when the adaptor plate is installed.