Description
Product Overview
The WPHMOTO rear swing arm is engineered for dirt pit bikes that demand a balance of strength and lightweight performance. Crafted from high‑grade aluminum, the arm offers excellent rigidity while keeping overall weight low, which translates to better handling and reduced strain on the bike’s suspension. It fits rear wheels of 12 inches and is compatible with engines ranging from 70cc to 125cc, making it a versatile upgrade for a wide range of models. The swing arm features a reinforced mounting plate and precision‑machined bolt holes to ensure a secure, wobble‑free connection to the frame. Its design incorporates a sleek, modern aesthetic without compromising on durability, and the finish resists corrosion even in harsh off‑road conditions.
Usage
Designed for off‑road enthusiasts, the swing arm excels in environments such as motocross tracks, trail riding, and pit bike competitions. Whether you are tackling muddy sections, rocky paths, or high‑speed jumps, the aluminum construction provides the necessary resilience to absorb impacts and maintain stability. The arm’s compatibility with 12‑inch rear wheels and a broad engine range means it serves both entry‑level riders looking to upgrade their bike and seasoned riders seeking a reliable component for demanding races. Installation is straightforward, requiring basic tools and a standard torque setting, allowing you to get back on the track quickly.

Why Choose Us
WPHMOTO stands out for its commitment to quality control and rigorous testing. Each swing arm undergoes a multi‑stage inspection process, including dimensional checks, material hardness testing, and load simulations to guarantee performance under extreme conditions. Our manufacturing facilities employ CNC machining for tight tolerances, ensuring each unit matches the original specifications of the TK202 model. Additionally, we provide a comprehensive warranty and responsive customer support, giving you confidence that your investment is protected. By choosing WPHMOTO, you benefit from a product that combines engineering precision with real‑world durability.
Key Features
- High‑strength aluminum construction for lightweight durability
- Fits 12‑inch rear wheels and 70cc‑125cc engines
- Reinforced mounting plate for secure, wobble‑free installation
- Corrosion‑resistant finish suitable for harsh off‑road conditions
- Precision‑machined bolt holes for easy, tool‑free assembly
FAQ
What bike sizes are compatible with this swing arm?
The swing arm is designed for dirt pit bikes with 12‑inch rear wheels and engine capacities between 70cc and 125cc.
Is the swing arm suitable for competitive racing?
Yes, its aluminum build and reinforced mounting provide the strength and stability required for motocross and pit bike racing.
How do I install the swing arm?
Installation involves removing the old arm, aligning the new arm’s bolt holes with the frame, and tightening the bolts to the manufacturer’s torque specifications using standard tools.
Will the swing arm rust over time?
The swing arm features a corrosion‑resistant coating that protects against rust even in wet or muddy environments.
Do you offer a warranty?
WPHMOTO provides a one‑year limited warranty covering manufacturing defects, along with dedicated customer support for any installation or fitment questions.




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