The MTB cousin of the Zayante road crank, the GIRDER hollow forged crank aims to become a go-to MTB Trail crank for all types of riding. The GIRDER combines the benefits of a wide bearing stance with a 30 mm aluminum spindle. Add in TURNs stout, hollow forged crank arms and you have a tremendous amount of stiffness as you carve and climb.
Add in beautifully sculpted, hollow forged crank arms and you have a massive amount of stiffness and power transfer. Praxis Works cold forged Narrow Wide chainring round out the Girder package for what is a very tough trail crank.
- Hollow Crankarms - With TURNs deep history of complex metal manufacturing, it was natural for them to continue working with and create an new cranks from aluminum. The crank arms are made with a unique hollow forging process that aligns the grain of the metal through the use of massive pressure. The end result is a light weight, tougher, and more durable crank than others in the market.
Attention to detail and proprietary in-house forging allows them to control the process from start to finish, and maximize performance from each AL part.
- Cold Forging Chainring - All of praxis works chainrings are created with their proprietary forging process which allows them to manipulate the ring shape and tooth profile more than ever before. This "One Shoot" process also creates a harder and tougher tooth surface for durability with over 1000 tons.
The axle tapers from 30 mm to 28 mm! For that you need praxis works M30 bottom brackets, which are available as an English threaded BB, BB86, BB92 or in the very popular Praxis Conversion for BB30, PF30 and Specialized OSBB frames.