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Ships within 48 hours · Estimated delivery Sep 16 - Sep 21
Restoring braking feel and control
Riders moving up from the Hyper Bee or larger youth electric bikes
removable without tools
Compare the models in our A20 vs A20 Pro guide or browse our Shop By Age guide
efficient and highly responsive power across the full rev range
RFN Warrior SX-E400 Battery (36V 5.2Ah Lithium) card Restoring braking feel and controlGenuine RFN 36V 5. 2Ah lithium battery designed for Warrior SX E400 bikes. Perfect as a spare battery to extend ride time or as a direct replacement. 36V 5. 2Ah lithium battery Compatible with RFN Warrior SX E400 models only RFN WAR 315013103001
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