Sport Forged ISIS

The Trialtech Sport ISIS cranks feature a strong and dependable forged 6061 construction. By using a forged manufacturing process the mechanical properties of the material are enhanced and result in a crank with an excellent strength to weight ratio. The hollowed out back section removes material where it is least efficient, helping to keep the weight down (from 488g for a 160mm pair) while allowing material to be used in more beneficial areas of the crank. The cranks also offer excellent frame/brake clearance (particularly beneficial for very compact frame designs).

Designed to be used with a front freewheel or threaded sprocket, the Sport ISIS have International Standard freewheel threads, and offer enough thread to make them compatible with almost any freewheel/sprocket and bashring combination. By using the ISIS bottom bracket fitting, the Sport ISIS cranks are not only lighter than traditional square taper cranks but also result in a stiffer and stronger over all drivetrain system.

The cranks are available in 160, 170 and 175mm lengths, finished in a tough matt black anodising and featuring a stylish Trialtech laser etched logo. Matt silver cranks are also available in 175mm only.

Please note that the minimum required thread contact between crank arm and sprocket/freewheel is 7mm, and a 1.37" sprocket/freewheel with maximum internal thread diameter 33.80mm (NOT 1.375") must be used. Failure to adhere to this instruction will damage the cranks threads and this is not covered under warranty.