Skip to product information
This cast iron reduction gear provides a direct mechanical solution for motorcycle and electric three-wheel power transmission systems. Designed specifically for compatibility with 25hT8F chain types, the 11-tooth configuration ensures proper engagement and torque transfer in reduction applications. The non-circular appearance reflects a functional design approach prioritising mechanical performance over aesthetic considerations.
The gear incorporates several practical design elements suited to mechanical power transmission requirements.
This reduction gear serves specific mechanical functions within power transmission systems.
Practical advantages stem from the gear's specific construction and compatibility features.





Motorcycle reduction gear for 25hT8F chain with 11-tooth cast iron construction providing durable power transmission for motorbike and electric three-wheel applications
£8.00
Sale price
£8.00
Regular price
Cast Iron 11-Tooth Motorcycle Reduction Gear for 25hT8F Chain Applications

Features and Construction

Material and Build
Manufactured from cast iron, this reduction gear utilises a material known for its durability and resistance to wear in mechanical applications. Cast iron provides sufficient strength for moderate torque requirements while maintaining dimensional stability during operation. The material choice makes this component suitable for replacement applications where original equipment specifications call for similar construction.Size and Practical Fit
With an 11-tooth configuration specifically designed for 25hT8F chain compatibility, this gear ensures proper meshing with corresponding chain links. The tooth count directly affects reduction ratios when paired with driven gears in motorcycle transmission systems. While precise dimensional measurements beyond tooth count are not provided, the component is intended as a direct replacement for compatible applications.Uses and Placement

Event or Professional Use
In motorcycle applications, this gear functions within reduction systems that control torque transfer from engine to wheel. Electric three-wheel vehicles utilise similar reduction mechanisms to manage power delivery from electric motors to drive systems. The component works within mechanical assemblies where chain reduction between different shaft speeds is required.Everyday Home Use
For motorcycle maintenance and repair, this gear provides a replacement option for worn or damaged original equipment. Owners undertaking DIY mechanical work on compatible motorcycles or electric three-wheelers can utilise this component as part of transmission system overhauls. The single-unit packaging ensures all necessary parts are included for straightforward installation.Benefits and Buying Value

Reuse and Low Maintenance
The cast iron construction contributes to extended service life through material durability. Proper installation with compatible 25hT8F chains minimises wear and reduces maintenance frequency compared to mismatched components. The design focuses on reliable performance rather than cosmetic appearance, prioritising functional longevity.Why Choose This Product
This reduction gear offers compatibility with two vehicle types—motorcycles and electric three-wheelers—increasing its potential application range. The 11-tooth configuration specifically matches 25hT8F chain requirements, ensuring proper mechanical engagement. Cast iron construction provides material consistency with many original equipment components in similar applications.




