Wolf Tooth Drop Stop B Oval Chainring

This oval single-chainring has been specially developed for converting Sram Red, Force, Force 1 cranksets and AXS power meters with an asymmetrical 107 mm bolt circle. This allows existing chainring combinations to be converted to a single-chainring drivetrain, saving weight and creating a clean, uncluttered look. Thanks to PowerTrac technology, the chainring is 10 per cent oval and features a less aggressive 112-degree timing. It is compatible with all 9-11-speed chains from all manufacturers and 12-speed chains from Sram, Campagnolo, KMC, Connex and Wipperman.

Wolf Tooth Drop Stop B technology:

Wolf Tooth’s patented Drop Stop B narrow-wide tooth profile offers the ultimate in chain guidance and self-cleaning. The right-hand side of the tooth is as wide as possible to maximise the contact area with the chain. More contact area means that the load is distributed over a larger surface, which in turn reduces wear. The left side of the tooth is narrower than the chain’s roller pin, so Wolf Tooth has removed additional material to create a channel allowing dirt to drain away. More contact area and space, in turn, means a lower probability of the chain falling off due to dirt whilst riding.

Wolf Tooth PowerTrac technology:

More power? Check. Better traction? Definitely. Fewer gear changes? Yes indeed. Funky, uneven pedal stroke? Sure. The design offers 10 per cent ovality and a less aggressive 112-degree timing. The change in pedal stroke is imperceptible to most riders, but it offers the benefits of POWER and TRACTION inherent in oval chainrings. It’s like having two chainrings in one! The PowerTrac rings engage in the section with the larger diameter at the optimal point of the downward stroke, known as the Power Zone – like on a clock face between 1–5 and 7–11 – to harness the biomechanical POWER inherent in the body and knee stroke: In this section, for example, the 34-tooth oval chainring corresponds to a non-oval chainring with 36 teeth. Similarly, during the upward stroke – also known as the recovery zone – like the area on a clock face between 11 and 1 and 5 and 7 – the smaller section engages, thereby maximising EFFICIENCY in the weakest part of the pedal rotation. In short, the ‘Power Zone’ ensures a smoother, more efficient pedal rotation and a more consistent torque with fewer revolutions, whilst pedalling in the recovery zone is made easier to maintain momentum.

Wolf Tooth Drop Stop B Oval Chainring Technology:

• Applications: Road, Gravel, Cyclo-cross, Cross-country
• Material: 7075 T6 aluminium
• Bore: 107 mm asymmetrical
• Mounting: 4-hole / 4-arm
• Chainline: Depends on crankset / power meter
• Ovality: 10 per cent
• Timing: 112 degrees after TDC / Top Dead Centre
• Weight: 86 grams (manufacturer’s specification)
• Compatibility: Sram Red FC-RED-1-D1, Force FC-FRC-D1 cranksets / AXS PM-FRC-D1, Force 1 FC-FRC-1-D1 / AXS PM-FRC-1-D1 powermeters
• Compatibility: all 9-11-speed chains from all manufacturers
• Compatibility: all 12-speed chains: Sram Flattop, Sram Eagle, Campagnolo, KMC, Connex, Wippermann
• Not compatible: 12-speed Shimano HG+ chains

Manufacturer’s note:

• When fitting, position the arrow mark on the chainring behind the crank arm. For cranks with Hidden Bolt mounting, ensure that the arrow mark on the chainring is rotated by 180 degrees, i.e. on the opposite side to the crank arm

Herstellerinformation: Wolftooth, 3100 West Park Drive, 55306 Burnsville, Minnesota, United States, https://wolftoothcomponents.com | Contact EU Cosmic Sports GmbH Leyher Strasse 47, 90763 Fürth, Germany, https://cosmicsports.de