Product Info

Grin Products

Cycle Analogger

Device for recording and logging trip data from a Cycle Analyst to an SD memory card, for use with our online Trip Analyzer software

Cycle Analogger

Battery Anchors

A universal version of the clever 'twist' battery rail concept that will allow you to attach the eZee flat battery to almost any bike rack or structure...

Cycle Analyst V2

The Cycle Analyst (formerly called DrainBrain) is the first digital dashboard and battery monitor originally designed around the specific needs of electric bicycles...

Cycle Analyst V2

Cycle Analyst V3

The next generation of CA enables fully customized control of an ebike, with throttle ramping, torque and PAS sensors, autocruise, thermal rollback, mode presets etc...

V3 Cycle Analyst

Cycle Lumenator

Ebike batteries normally range in voltage from 24V up to 72V, while most bike lights and accessories are made to run off 6V or 12V. At GRIN we've solved this by producing our own line of lighting components to run off a super wide input voltage for direct connection to any ebike battery pack, no separate voltage converter required...

Cycle Satiator - NEW

Our latest product is a universal 360 watt sealed and programmable battery charger for all kinds of packs up to 60V max...
Cycle Satiator

Cycle Stoker

A GRIN variant on the Stokemonkey mid-drive system which doesn't force the cranks to turn and has pedal torque sensing....
Cycle Stoker Setup

DC-DC Converters

Our DC-DCs are rugged and compact, completely potted in thermal epoxy leaving no concern of water, dust or snow damage, or of exposed metal pins shorting out against the bike frame...

Electrolights

Our series of ruggedized LED ebike lights stemmed in part from frustration with all the inexpensive flashing bike lights out there...

Stoke Monkey

The Stokemonkey is a mid-drive conversion package originally developed by Clever Cycles in the early 2000's for tackling the steep hills of San Francisco with a Cargo Bike....

Torque Arms

Torque arms are used to prevent axle rotation in hub motors. When a hub motor is powered up running, for all the torque that the motor generates spinning a wheel forwards, there is an equal and opposite torque on the axle causing it to rotate backwards...

Third Party Products

Crystalyte Hub Motors

Direct Drive hub motors are built such that the motor IS the wheel. There are no moving parts or gears to wear out making them mechanically robust and fairly silent in operation...

Edgerunner Cargo Bike

The Edgerunner is an exciting project partnership between ourselves, Naked Cycles, Xtracycle, and eZee bikes, to create what we all felt would make the ultimate all-around utility ebike. At $3700, it is not an entry-level machine, but compared to other ebikes in the $3000+ price range this one packs a serious punch and truly delivers when you are looking for a full-on car replacement....

Electric Bike Batteries

We used to specialize in stocking and sourcing higher-end rechargeable battery packs for electric bicycles, but have reduced this now to now carrying just 5 types: a 36V 9Ah LiFePO4 eZee, a 36V 14Ah LiMn eZee, a 48V 10Ah pack eZee, a 36V 20Ah AllCell, and a 48V 20Ah AllCell. All packs come with genuine Anderson Powerpole connectors for the discharge leads and use a 3 pin XLR connector for charging...

eZee Conversion Kits

The geared hub motor kit from eZee bike is one of the nicer complete ebike conversion packages available. It is light weight, well engineered, torquy, and fully compatible with North American bicycle standards...

Geared Hub Motors

Geared hub motors are smaller and lightweight yet deliver an impressive amount of torque for their size due to the internal gear reduction. They also have an internal freewheel, which can be nice in that there is no motor drag when the hub isn't being powered, but it also means that there is no possibility to use them as regen or run them in reverse...

Infineon Controllers

The motor controllers based around the Infineon control chips have numerous capabilities and improvements over traditional Chinese controllers we have carried. These include the capability of smooth regenerative breaking, smaller circuit board layout, sensored/sensorless operation, much better waterproofing and more...