Best Rear Mount Bicycle Engine Kits for Motorized Bicycles and More
Transforming a standard bicycle into a motor-assisted ride is easier with a rear mount engine kit. These kits attach to the rear wheel area, offering a simple path to enhanced speed and extended riding range without a full bike rebuild. Below you’ll find five rear-mounted options that balance compatibility, durability, and ease of installation. Each product is designed to fit a wide range of bikes and engines, making them practical for hobbyists and daily commuters alike.
| Product | Brand | Notes |
|---|---|---|
| NAVARME 42cc Rear-Wheel Side Mount Kit | NAVARME | Wide compatibility; simple installation |
| 40-5 Rear-Wheel Side Mount Kit | Cylemoto | Alloy construction; corrosion resistant |
| BH-Motor 9 Hole Rear Sprocket Mount Kit | BH-Motor | Rear sprocket mounting capability |
| jtfrkope Motor Mount Block Set | jtfrkope | Front and rear studs; versatile fit |
| jtfrkope 9 Hole Rear Sprocket Mount Kit | jtfrkope | 9-hole mount; multiple sprocket options |
NAVARME 42cc Rear-Wheel Side Mount Kit
NAVARME’s rear-wheel side mount kit is designed to convert a broad range of bicycles into motorized bikes quickly. It’s marketed as brand new and high quality, with emphasis on ease of installation and daily reliability. The kit claims compatibility with a variety of bicycles and stresses rugged construction for sustained use, aiming to deliver a cost-effective transportation upgrade for routine commuting or recreational riding.
40-5 Rear-Wheel Side Mount Kit
The 40-5 rear wheel side mount kit is presented for use with 4-stroke engines ranging from 42cc to 49cc, compatible with engines like the Honda GX35. It emphasizes broad bicycle compatibility and premium alloy construction to resist rust, oxidation, and corrosion. The kit claims precise manufacturing standards to ensure consistent performance across installations, making it suitable for riders seeking a robust, long-lasting motorized bicycle option.
BH-Motor 9 Hole Rear Sprocket Mount Kit
BH-Motor’s 9-hole rear sprocket mount kit is positioned as a compatible upgrade for various motorized bicycle builds. The listing highlights its suitability for 49cc, 66cc, and 80cc engine configurations, focusing on a straightforward mounting approach and the potential to expand gearing options via a rear sprocket system. The product text emphasizes compatibility with common motorized bicycle parts to support customization and performance tuning.
jtfrkope Motor Mount Block Set
The jtfrkope motor mount block set is described as compatible with engines in the 49cc to 100cc range and includes front and rear studs (6mm). The kit is positioned as a versatile option for two-stroke motorized bicycles, with emphasis on secure mounting and a range of engine sizes. The included components suggest a modular approach to engine installation and alignment across different bike frames.
jtfrkope New 9 Hole Rear Sprocket Mount Kit
This 9-hole rear sprocket mount kit from jtfrkope is designed for 49cc, 50cc, 66cc, 80cc, and 100cc motorized bicycles. The package includes multiple mounting and backing components, enabling secure installation on a range of CNC and disc-brake-equipped hubs. The description highlights compatibility with rear sprocket mounting pads and various sprocket configurations for gearing flexibility.
Bicycle-Engines Black V-Frame Mounting Plate Kit
CDHPOWER’s V-frame mounting plate is a 4-stroke compatible option designed for 49cc engines. The listing notes a black mounting plate with compatible bolt hole dimensions (6.5mm by 26.5mm), indicating a focus on standardized mounting patterns for ease of installation. This kit is positioned as a sturdy mounting solution for 4-stroke motorized bicycle builds, emphasizing compatibility with a common engine type and straightforward fit to existing frames.
8mm Studs Front Motor Mount Block Set
DONSP1986’s front motor mount block set provides 8mm studs and a complete mounting kit for front-engine configurations commonly used with 48cc to 100cc engines. The package includes blocks, studs, clamps, washers, and nuts, detailing a complete hardware set designed for secure mounting and reliable engine alignment on various bikes. It highlights threaded compatibility (M8x1.25) for straightforward installation.
New 9 Hole Rear Sprocket Mount Kit With 44T Sprocket
This jtfrkope rear sprocket mount kit includes a 44T rear sprocket and accompanying mounting hardware, designed for 49cc to 100cc engine configurations. The listing emphasizes a complete kit with backing plates and rubber washers for secure mounting, along with compatibility for rear hub discs and ball bearings. It’s positioned as a complete upgrade for gearing and mounting on motorized bicycles.
Buying Guide: Key Purchase Considerations For Rear Mount Bicycle Engine Kits
When choosing a rear mount engine kit, consider engine compatibility, bike frame adaptability, and installation complexity. Look for kits offering broad engine compatibility (commonly 49cc to 100cc), durable alloy or steel components resistant to rust and corrosion, and clear mounting patterns that match standard bolt hole spacings. Sprocket kits should provide multiple gear options to optimize speed and torque for your riding style. Also check for included hardware, instructional documentation, and warranty coverage. For riders prioritizing reliability, prioritize kits with proven performance in everyday commuting and easy maintenance. If you value customization, choose kits that support a wide range of engine brands and frame types, ensuring future upgrades without needing a full rebuild.
From an operational perspective, assess installation effort and required tools. Some kits are designed for near plug-and-play installation, while others require more extensive frame modification or alignment. Safety considerations include ensuring proper chain alignment and brake clearance, as well as securing the engine mount to minimize vibration and movement. Finally, consider the availability of replacement parts and service support from the manufacturer or retailer to maintain long-term reliability.