Store Under Maintenance, Apr 2nd - 12th 

Grin's storefront will be disabled until Monday while we rollout and test a number of system changes, and also catch up processing and shipping all the backlogged orders we have in the queue.  You should still be able to add items to your cart and have them ready to checkout when we re-enable the store on the 12th.  See our blog post for more details. 


Shengyi X1 / X2

The SX1 front and SX2 rear motor kits are ideal for people looking for a silent helical geared hub motor in the mid-range power level. These don't have quite the hill climbing capabilities of an eZee or GMAC motor, but they more powerful and robust than the G310/G311 hubs from Bafang and are OK with high RPM applications too. See the motor info page here. Our kits include combined speed and temperature signaling on the Z910 plug to provide full thermal rollback protection for the motor when used with a V3 Cycle Analyst.

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  1. SX1 Front Ready-to-Roll Kit

    From USD$544.00

    To USD$2,411.00

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  2. SX2 Rear Ready-to-Roll Kit

    From USD$535.00

    To USD$2,485.00

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