Custom crank set with overdrive gearing for high-speed pedalling. Fits all Qulbix frame models with 83 mm bottom bracket.
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A high performance electric motor kit that fits all Qulbix frame kits perfectly.
If you come from the EU Member states, the prices with tax (VAT) apply. If you come outside EU, Ex. Tax prices apply. Read more.
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QulbixTM Performance Electric Bikes 2018. All rights reserved.