Chain Tensioner
NC-17 DH/4 Cross chain tensioner: As long as frame manufacturers fail to integrate chain guides with their DH frames, we will continue to develop NC-17 chain tensioners. There are many systems out there now, but only one winner.
The NC-17 Tensioner uses two guides to keep the chain running true- using sealed cartridge bearings and specially formulated rubber to keep the rolling resistance and noise to a minimum. The body of the Tensioner is made from 7075- T6 aluminium to keep the weight down but is supplemented at high stress areas with high grade steel.
The Tensioner is attached by fitting behind the BB-Shell and then securing against rotation with small grub screws (apart from the ISCG version).
The Tensioner is available for standard, compact drive, 4 arm cranks and in ISCG.
The Stinger 1 arm Tensioner represents a minimalist alternative using the same
7075 T6 alloy, sealed cartridge bearings and special compund rubber to keep things light and running smoothly.
If you want a seriously cool look then you can go for a Lexan disk rather than the standard Aluminium disk. For cost reasons we only produce the Lexan disk in one size (4 bolt, 104mm). The Stinger 1 arm Tensioner represents a reasonable alternative. Our Tensioner is standardized
Which bolt diameter does my crank have?
Our templates may help you
Freeride Tensioner
For some people this would still count as DH size, depending on the courses where you live. Takes chain rings between 38 and 44 teeth.
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