Chain Tensioners

Fits 3/8` Axles
Lightweight, compact design
Forged alloy construction
Chromoly bolt

Fits 3/8` Axles
Lightweight, compact design
Forged alloy construction
Chromoly bolt

Forged alloy construction
Double bolt centering design
Oversize 6mm hex bolts

Adjusts rear wheel for centering in frame

CNC machined 6061-T6 aluminum chain tensioners
Compatible with 3/8 inch and 10mm axles
Single bolt operation makes tensioning a simple task

CNC machined 6061-T6 aluminum chain tensioners
Compatible with 3/8 inch and 10mm axles
Single bolt operation makes tensioning a simple task

CNC machined 6061-T6 aluminum chain tensioners
Compatible with 3/8 inch and 10mm axles
Single bolt operation makes tensioning a simple task

CNC machined 6061-T6 aluminum chain tensioners
Compatible with 3/8 inch and 10mm axles
Single bolt operation makes tensioning a simple task

CNC machined 6061-T6 aluminum chain tensioners
Compatible with 3/8 inch and 10mm axles
Single bolt operation makes tensioning a simple task

Adjusting chain tension is quick and easy with the new Box Three Chain Tensioner
With a single hole `lollipop` design, these tensioners reduce weight and help keep your rear wheel locked in place

Adjusting chain tension is quick and easy with the new Box Three Chain Tensioner
With a single hole `lollipop` design, these tensioners reduce weight and help keep your rear wheel locked in place

Adjusting chain tension is quick and easy with the new Box Three Chain Tensioner
With a single hole `lollipop` design, these tensioners reduce weight and help keep your rear wheel locked in place

Adjusting chain tension is quick and easy with the new Box Three Chain Tensioner
With a single hole `lollipop` design, these tensioners reduce weight and help keep your rear wheel locked in place

Genuine SE Bikes chain tensioners
Improved design and function
Easily adjusts to take up chain slack

Genuine SE Bikes chain tensioners
Improved design and function
Easily adjusts to take up chain slack

Genuine SE Bikes chain tensioners
Improved design and function
Easily adjusts to take up chain slack

Genuine SE Bikes chain tensioners
Improved design and function
Easily adjusts to take up chain slack

Genuine SE Bikes chain tensioners
Improved design and function
Easily adjusts to take up chain slack

Box One Chain Tensioners are extruded then CNC-machined from 7075 aluminum for an optimal balance of strength and weight
A minimalist design adds style while reducing their overall mass
Laser-etched graphics that include wheel position guides and two 10mm mounting holes with 15mm of adjustment to ensure perfect adjustability

Box One Chain Tensioners are extruded then CNC-machined from 7075 aluminum for an optimal balance of strength and weight
A minimalist design adds style while reducing their overall mass
Laser-etched graphics that include wheel position guides and two 10mm mounting holes with 15mm of adjustment to ensure perfect adjustability

Box One Chain Tensioners are extruded then CNC-machined from 7075 aluminum for an optimal balance of strength and weight
A minimalist design adds style while reducing their overall mass
Laser-etched graphics that include wheel position guides and two 10mm mounting holes with 15mm of adjustment to ensure perfect adjustability

Box One Chain Tensioners are extruded then CNC-machined from 7075 aluminum for an optimal balance of strength and weight
A minimalist design adds style while reducing their overall mass
Laser-etched graphics that include wheel position guides and two 10mm mounting holes with 15mm of adjustment to ensure perfect adjustability

Solid, non-adjustable chain tensioners compatible with any frame, chain and chainring combination
Sold in pairs for 3/8` or 14mm axles in various offset sizes
Sturdy and dependable 6061-T6 alloy construction

Solid, non-adjustable chain tensioners compatible with any frame, chain and chainring combination
Sold in pairs for 3/8` or 14mm axles in various offset sizes
Sturdy and dependable 6061-T6 alloy construction

Solid, non-adjustable chain tensioners compatible with any frame, chain and chainring combination
Sold in pairs for 3/8` or 14mm axles in various offset sizes
Sturdy and dependable 6061-T6 alloy construction

Solid, non-adjustable chain tensioners compatible with any frame, chain and chainring combination
Sold in pairs for 3/8` or 14mm axles in various offset sizes
Sturdy and dependable 6061-T6 alloy construction

Solid, non-adjustable chain tensioners compatible with any frame, chain and chainring combination
Sold in pairs for 3/8` or 14mm axles in various offset sizes
Sturdy and dependable 6061-T6 alloy construction

Solid, non-adjustable chain tensioners compatible with any frame, chain and chainring combination
Sold in pairs for 3/8` or 14mm axles in various offset sizes
Sturdy and dependable 6061-T6 alloy construction

Solid, non-adjustable chain tensioners compatible with any frame, chain and chainring combination
Sold in pairs for 3/8` or 14mm axles in various offset sizes
Sturdy and dependable 6061-T6 alloy construction

Solid, non-adjustable chain tensioners compatible with any frame, chain and chainring combination
Sold in pairs for 3/8` or 14mm axles in various offset sizes
Sturdy and dependable 6061-T6 alloy construction