The Calculated M4 mini crank arms rate with the best on the BMX race market but with a better price tag. Precision CNC machined in California from 7075 aluminium, the lightweight M4 cranks are designed for the smaller racer. Crank arms are sold separately from the spider or chainwheel, this allows you to set up the bike with the freedom to build it the way you want it and customise your colour preferences.
CNC’d from 7075 Alloy
The M4 cranks are designed for RACE ONLY!
Recommended 108mm or wider bottom bracket
Rider weight limit 43 kg (95 lbs)
Compatible with Answer style square spiders and sprockets
Machined In Santa Cruz California
Lifetime Replacement Guarantee
Check out the embedded video to see BMX Ultra chatting with Casey Robinson from Calculated Racing.
SKU 81CRANKM4
Brand Calculated Racing