Promax C-1 Chain Tensioners
Best lightweight tensioner for competitive BMX racers seeking precise chain alignment
These tensioners provide the precision needed to keep your chain locked in place during explosive starts. By utilizing a simple screw-adjustment system, they eliminate the guesswork of chain tensioning, ensuring your drivetrain stays reliable when it matters most.
$12.99
at
CBI Bikes
More C-1 options
Who it's for
- BMX racers looking to minimize weight without sacrificing durability
- Riders needing flexible setup options for different gear ratios
- Mechanics and parents wanting hassle-free maintenance during race days
Who should skip it
- Riders using frames with 15mm or 20mm thru-axles
- High-torque sprinters who prefer the security of dual-bolt locking systems
- Custom builders seeking high-end aesthetic flourishes for a show bike
Performance breakdown
Build Integrity
CNC-machined 6061-T6 aluminum offers exceptional durability for high-torque racing environments.
Adjustment Precision
Screw-based system with control marks allows for highly accurate chain alignment.
Weight Efficiency
Lightweight profile keeps rotational mass low without sacrificing structural strength.
Derailment Prevention
Locks the rear wheel securely to eliminate chain slack during acceleration.
Installation Ease
Straightforward setup for standard open dropouts, though requires basic mechanical familiarity.
Compatibility Range
Strictly limited to 10mm axles and classic open dropout frame designs.
Key Specs
Material
6061-T6 aluminum
Axle Compatibility
10mm
Weight
64g
Quantity per pack
2
Bike Type Compatibility
BMX
Compatibility
Classic frames with open rear dropouts
Adjustment
Single screw with lock nut
Mounting Type
2-hole
Know before you buy
Still have a question?
Ask Metto anything about the Promax C-1 Chain Tensioners before you decide.
