The final crank design features a unique expanding spline axle/arm interface (pat pending). Previously, cranks with splines often used a taper to ensure a snug fit. These cranks worked fine the first time they were fitted to the axle, but once they d been taken off and on a few times, the spline became worn, so they d suffer from the inevitable movement and annoying creak.

To solve this problem we settled on a unique expanding spline. The cranks are pulled onto a spline, then a tapered plug is fitted inside the axle which can be tightened up each time the arm is refitted - giving a perfect fit every time.

Added to this we CNC machine the arms from forgings which gives them immense stiffness and strength. The arms also have a splined mounting for spiders and direct mount sprockets giving excellent versatility. The spiders are available in either single (104 BCD) or double (64/104 BCD) ring configuration.

The cranks use a 30mm axle and are compatible with the majority of bottom bracket systems via our expanded range of bottom brackets.

Specification:
Material: Forged and CNC machined 7000 series aluminium alloy crank arms
Length = 165, 170 and 175mm
Q-Factor = 167mm
Chainline = 49mm
Axle Diameter = 30mm
Expanding spline crank arm/axle interface (pat pending)
3-piece construction
Versatile Spline mount for chainring/spider
Chainring mounting: Spiderless Retainer chainrings 26T to 36T
Chainring mounting: Spider Single 104BCD and Double 64/104BCD
Colours: black, red, blue, purple and orange

Weitere technische Infos finden Sie durch Klick auf die Buttons oben:
PDF = Liste der passenden Tretlager
MANUAL = Montageanleitung
PARTS = Ersatzteilliste
GEO = Massblatt