Chain Tensioner
JW Bicycle Products Chain Tensioner
BMX frames are not all made the same. Some dropouts are long and some are short. So why do chain tensioners come in only one length? Sometimes they are not long enough or a lot is hanging off the back of the dropout. JW chain tensioners come is 4 sizes to achieve an exact fit.
Available sizes: 1.0, 1.25, 1.5, and 1.75” reach.
Colors: Buffed, black, Deep red and Blue
Weight: 1.5oz
Comes with two lengths of bolts to help eliminate extra bolt hanging off back of tensioner.
To determine correct sizing, measure from center of axle to the end of the dropout. Use the chart on the right for best results. Remember to account for movement due to changing gear sizes.
Measurement: Reach:
1/2” to 7/8” 1.0”
3/4” to 11/8” 1.25”
1” to 1 3/8” 1.5”
1 1/4” to 1 3/4” 1.75”