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Felt Bicycles Surplus 50

Felt Bicycles Surplus 50
Dark Blue/Cyan
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What if we told you that you could finish riding your favorite trail faster than ever before? And that you could ride farther and cover more terrain in a given amount of time? And that you could climb faster than you ever thought possible? Sounds like a pipe dream. But, guess what? It's not. Meet the Surplus. It's everything you want in a mountain bike, and more.

If you've never experienced the thrill, exhilaration, and unbridled joy of an electric-assist mountain bike, then you're in for a treat. In fact, we're jealous of you for getting the chance to experience one for the first time. From the very first pedal stroke, you'll have a grin from ear-to-ear, and you'll probably let loose an Ohhh yeeeaaah! scream, too. Yes, it is that much fun. And make no mistake, this is a bicycle, which means you have to pedal — there's no throttle like you'd find on a motorcycle. The motor only gives back what your legs put out. Now, of course, anyone can slap an electric motor onto a bicycle and call it a day — but that will simply ruin the bike's handling and control. We built the Surplus 50 from the ground-up, around the latest electric motor from Shimano, and with all of the performance and handling of the best-riding hardtails out there.

The Surplus 50 is powered by an E7000 drive system from Shimano, the most accomplished and respected bicycle component maker in the world. The E7000 system is a dedicated off-riding riding platform, which means it was made specifically for the demands of mountain biking. These include a rugged and durable design for a long life of use and abuse on rugged trails, as well as a lightweight and minimal construction that keeps the bike's center of gravity as low as possible. This makes the Surplus handle as well as the very best aluminum hardtail bikes that don't feature an electric-assist motor. The E7000 system sports 250 watts of available power, with a top speed of 20mph. To power the drive system, the Surplus 50 comes with a Shimano E8020 battery with 500Wh for quick charging capabilities and enough range for all-day, epic rides, as well as multi-day bikepacking trips. It's sleek, integrated design adds to the bike's clean aesthetics. Four available settings let you customize the amount of power you want, and it's easy to switch instantly at the press of a button at your fingertips.

Buy It If:
You want to experience the classic ride of a hardtail mountain bike, plus the added range and speed that a modern electric-assist motor can offer.

- Shimano E7000 drive system for electric-assist pedaling power
- Lightweight, durable aluminum frame
- Shimano shifting and braking components
- RockShox Recon RL Solo Air fork

Plus-size rims and tires

Wider than standard yet narrower than fat, plus-size rims and tires hit the sweet spot in grip, stability, and speed, giving you more confidence on technical terrain. Compared to a standard tire you’ll feel grip in places you wouldn’t expect thanks to a bigger contact patch and greater rollover clearance. More air volume allows lower tire pressures which softens bumps and increases float on sand or snow. Whether you’re a novice or an expert, the benefits of plus-size tires and rims will amplify your mountain biking fun.

Dropper posts

A dropper seatpost allows you to quickly lower and raise your seat to give you an ideal riding position. Dropping your seat creates a lower center of gravity for better control and maneuverability on steep descents, while raising it puts you at normal riding height for efficient pedaling.

Construction can include either hydraulic- or cable-actuated systems and the post’s travel can either be infinitely adjustable or stopped at set intervals, depending on the model.

Dropper seatposts come in standard lengths and diameters and vary by the amount of travel.


Motor Shimano E7000 MTB drive, 250W output
Battery Shimano E8020, 500Wh integrated
Max Assisted Speed 20mph
Frame Felt 27.5+, Shimano e-bike design, 6061 aluminum, fully integrated down tube, ControlTaper integrated head tube, post disc mount, replaceable derailleur hanger, Syntace style thru axle
Fork RockShox Recon RL Solo Air, 130mm travel, E-Bike specific
Headset FSA sealed cartridge bearings, semi-integrated, No.57, 1.125 - 1.5"
Axles Front: 110 x 15mm Boost thru-axle
Rear: 148 x 12mm Boost thru-axle
Rims/Wheels E-Double wall, tubeless compatible, 35mm inner width
Hubs Shimano MT400, Center lock, 32H
Spokes 2.0mm butted stainless steel
Tires Maxxis Rekon+, Dual, tubeless ready, 27.5 x 2.8"
Crankset Shimano E8000, SM/MD 165mm, LG/XL 170mm
Chainrings 34T
Chain KMC X10-E, 10-speed
Rear Derailleur Shimano Deore, 10-speed, Shadow Plus, long cage
Cassette/Rear Cogs Shimano, 10-speed, 11-42T
Shifters Shimano Deore M6000, 1x10
Handlebars Devox E-MTB 6061 butted riser, Ø31.8mm, 25mm rise, 9° sweep, 780mm wide, custom internal wire routing
Tape/Grips Devox Pauley Grip, lock-on
Stem Devox, ±7° rise, Ø31.8mm with Cr-Mo bolts, 35mm length
Brake Levers Shimano
Brakes Front: Shimano MT400 hydraulic disc, 203mm rotor
Rear: Shimano MT400 hydraulic disc, 180mm rotor
Saddle Devox MTB
Seatpost KS 900 i dropper with Westie, Ø30.9mm, SM/ MD: 100mm travel, LG/XL: 125mm travel
Accessories & Extras Battery charger

* Subject to change without notice.

Part Numbers

Option UPC MPN
Dark Blue/Cyan / 16-inch 840077002374 BBIDC05 000016
Dark Blue/Cyan / 18-inch 840077002381 BBIDC05 000018
Dark Blue/Cyan / 20-inch 840077002398 BBIDC05 000020
Dark Blue/Cyan / 22-inch 840077002404 BBIDC05 000022