NOTICE: We Are Closed for Moving
January 18th - 24th
See Blog for Details

Our big migration is moving along like clockwork, and we look forward to easing back into normal business by the end of next week.


Geared RTR

Grin's Ready-to-Roll (RTR) kits are largely pre-configured hub motor packages that include a downtube battery pack with an integrated Baserunner Motor Controller. They are clean to install and use our new waterproof CA3-WP device with integrated handlebar switch for turning the system on and off and adjusting pedal assist levels. See the RTR Intro Video or the Kits Summary Page for details on the motor choices, and the Advanced PAS Page to understand the PAS and Torque sensors.

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  1. Brompton Geared Motor Ready-to-Roll Kit

    From USD$579.00

    To USD$1,319.00

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  2. G310 Rear Minimal RTR Kit, Custom Wheelbuild

    From USD$224.00

    To USD$1,685.00

    Out of stock
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  3. G310 Rear Ready-to-Roll Kit, Prelaced

    From USD$325.00

    To USD$1,659.00

    Out of stock
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  4. G311 Front Minimal RTR Kit

    From USD$243.00

    To USD$1,443.00

    Out of stock
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  5. G311 Front Ready-to-Roll Kit

    From USD$344.00

    To USD$1,805.00

    Out of stock
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  6. GMAC Ready-to-Roll Kit

    From USD$830.00

    To USD$2,425.00

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  7. Rear Fatbike Ready-to-Roll Kit

    From USD$600.00

    To USD$2,146.00

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  8. SX1 Front Ready-to-Roll Kit

    From USD$544.00

    To USD$2,045.00

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  9. SX2 Rear Ready-to-Roll Kit

    From USD$550.00

    To USD$2,119.00

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  10. NEW
    eZee Front Ready-to-Roll Kit

    From USD$935.00

    To USD$2,298.00 Regular Price USD$2,306.00

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