DMR’s cunning ExTypes have been our default replacements for crank-breaking hooligans for a couple of years now.
The integrated steel axle is welded onto their proven chromoly steel arm on one side and bolted on at the other. This gives convenient fitting and slam-proof steel strength, and they’re not even conspicuously heavy.
They cranks are available in 170 or 175mm lengths and come with a conventional four-arm spider, but five-arm and direct-fit DMR splined chainrings (28, 36 and 38-tooth) are available, making this a versatile setup.
We’ve used this crank on maximum-abuse jump bikes without a hint of ﬂex, creak or other weakness. The chromed ﬁnish stays looking ﬂy for a long time. We can’t say the same about the bottom bracket, but they’re primarily cranks for pounders, not pedallers.