eSummit Electric Full Sus Fat Bike

World's Only Full Carbon Full Suspension Electric Fat Bike Fitting Big 27.5 Fat Wheels with Today's Biggest 4.5" & 5" Tires

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Internal 504wh Battery Version

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External 630wh Battery Version

We have had a blast riding the best fat E-Bikes during the last few winters here in MN, but none of them can fit big 5" tires on the rear nor 27.5 size fat wheels, which is so frustrating... So we made our own! Our full-carbon full-suspension Shimano E8000 mid-drive motor eFat Bike, fitting the big 27.5 wheel size with the biggest tires on the market, with frame clearance to spare! We achieve this with a custom offset spider and flared cranks, which make for perfect a chainline and, seriously, the most awesome bike we've ever ridden.


Replace the rear end with a carbon Boost rear triangle for the non-snow season and turn it into your amazing summer ride. Or, just put 27.5x4.0 tires on and rip the singletrack in fat mode with the most amazing traction ever, on a bike so light it flys and floats over chatter. It delivers all the promise of a fat bike without feeling sluggish... the motor sets you free on the trail!


We designed the bike with a nice high BB height (380mm with 4.5 Cake Eater tires and 363mm with 4.0 size) but still with the feel and handling of a nimble XC race bike. You really feel down inside the cockpit with ultimate confidence but able to pedal thru any corner or rock garden.

Price: $12,500

Contact us for full spec sheet or to custom build your eSummit any way you like!


Quickie Video of eSummit in Action


Replace Rear Triangle for Summer Mode, Boost Rear, Normal eMTB XC

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....or Keep it in FatBike Mode with 29+ Wheels & 3" Tires.....

Goodwin eSummit
Goodwin eSummit

Size XL 22" eSummit with 29+ LaMere carbon 50mm wide rims and 3" WTB Ranger tires

Andy Pointon
Andy Pointon

Andy Pointon's size L internal battery, red Onyx hubs, E8000 motor, XTR Di2, Magura brakes, big 27.5 carbon wheels.

eSummit size Med
eSummit size Med

.... with external Shimano battery, E8000 motor, Wren fork, LaMere carbon wheels with DTSwiss hubs for Adrian H local Mpls rider/commuter/ad agency maven.

Goodwin eSummit
Goodwin eSummit

Size XL 22" eSummit with 29+ LaMere carbon 50mm wide rims and 3" WTB Ranger tires


Scroll right/left to see Various eSummit Builds

From James R. in the Desert 12.2020

Lots of soft sand, rocks, etc.  The eSummit eats it up and more.  This morning’s 20 miler ride we rode through at least 10 miles of 4-6” sand with no problem. I definitely need to check “nuts and bolts” after two or three rides. My riding partner rides a fatty equipped with the 1500w Bafang set up.  It works well for him.  His bike weighs in around 80 pounds though.  The eSummit handles like a Tesla on the downhills! 


Thanks for the continued support.  You have outstanding customer service!

From Tyler H in AZ 11.2020

Oh man I have owned a ton of e-Bikes this is the best one ever..... this is the best e-Bike there is.... not only is this the best e-Bike ever, this is the best invention ever!

From Russ A in MI 2.2021

Just thought I would give a ride report on the eSummit this bike is the best Fat bike ever thanks for the build Russ.