Specifications | Weight, Crank, Bearings, BSA Cups | 484 grams |
| Weight, 6806 Bearing Pair | 43 grams |
| Weight, PF30 Cups | 21.5 grams |
| Weight, BSA Cups | 19.5 grams |
| Weight, BB30 Cups | N/A |
| Bearing Size | 6806 (2) |
| Bolt Circle Diameter | 110 mm (compact) |
| Spindle Diameter | 27 mm |
| Bottom Bracket Options | BSA, BB30, PF30 |
| Crankarm Length | 172.5 mm only |
| Q Factor | 138 mm |
Detail
The Extralite QRC2 crankset succeeds the previous genereration QRC crankset with increased overall strength and stiffness in a more user-friendly design. This innovative outboard bearing crankset features Extralite's signature three dimensional CNC milling, which creates a beautiful, complex design on the face of the cranks. The insides of the arms feature Extralite's patented Stress Split Profile, which serves to greatly reduce the weight of the arms. Through these processes, a maximum amount of material is removed while retaining optimal strength and stiffness. These cranks also have a relatively small q-factor, which can increase a rider's efficiency and comfort by narrowing their stance.
These cranks feature special low-friction oversize 6806 bearings for increased stiffness and longer wear life. This is a standard bearing size, so they can be easily replaced when worn, or upgraded to hybrid ceramics. A simple bearing preload adjustment allows for an easy, perfect adjustment. The left side crank arm features a self extracting bolt for easy removal and installation.
Extralite takes great pride in producing product that are every bit beautiful as they are functional. Where most manufacturers will take measures to remove machine marks from aluminum surfaces, Extralite exploits their unique machining process to create intricate surface designs and smooth edge transitions. The crank arms are anodized in glossy black with Extralite's logos laser etched on either side of both crank arms.
100% made in Italy
*Please note that the Ebones QRC-2 Crank comes stock with 6806 bearings and English threaded BSA bottom bracket cups. To fit a Press Fit 30 or BB30 bottom bracket shell, you'll need to purchase the appropriate bottom bracket cups, which the 6806 bearings will fit.
Installation/AssemblyThreaded BSA bearings cups are installed using a Shimano Octalink tool (such as the TL-UN70), while the BB30 and PF30 cups will require a bearing press with 6806 drifts or other appropriate press tool. The left side crank arm bolt will require an 8 mm hex wrench and the bearing preload is adjustable with a common pin spanner or by hand.
