3T Exploro Racemax Boost Flatbar
3T Exploro Racemax Boost GRX Electric Gravel Bike
3T Electric bike front on
3 T exploro Racemax Boost GRX Electric Gravel Bike from above
3T Exploro Racemax Boost GRX Electric Gravel Bike
3T Exploro Racemax Boost GRX Electric Gravel Bike
3T Exploro Racemax Boost GRX Electric Gravel Bike
3T Exploro Racemax Boost GRX Electric Gravel Bike
3T Exploro Racemax Boost GRX Electric Gravel Bike
3T Exploro Racemax Boost GRX Electric Gravel Bike
3T Exploro Racemax Boost GRX Electric Gravel Bike
3T Exploro Racemax Boost GRX Electric Gravel Bike
2 photographs of the Explore Racemax
Dimensions of 3T Exploro Racemax Boost GRX Electric Gravel Bike

3T: Exploro Racemax Boost GRX Electric Gravel Bike - Flatbar

Regular price £7,399.00
Tax included. FREE shipping on all bikes. Plus FREE returns.

Frame size

3T Exploro Racemax Boost (Grey Frame) - In Stock Now:

We are incredibly proud to stock the 3T range of e-bikes. The 3T Exploro Racemax Boost GRX is an exceptional electric gravel bike, but also equally at home as an e-road or commuter bike. 3T are famed for making some of the fastest, lightest and best looking gravel and road bikes on the market and they have extended this in to their e-bike range. The 3T Exploro Racemax Boost GRX is designed around being as aero dynamic as possible - everything about the carbon frame suggests speed and it rides equally well with the motor on and off. 

The specs are top end too: The motor is a Mahale 250W - Mahale are considered the go to motors for top spec bikes by premium eBike manufacturers. Shimano GRX disc brakes and gear set and Pirelli Cinturato Gravel tyres. Finally, the assistance of the motor on such a light gravel bike not only means it is less effort to get up hills, the additional torque means you have more traction and slip less on steep or muddy trails - one of the big issues with non electric gravel bikes. 

Treat yourself - Arrange a test ride or video call of the 3T Exploro Racemax Boost to find out more....

Disclaimer - This bike is restricted to 15.5mph of motorized assistance in accordance with UK Law. 


Looks like a road bike, rips through rough terrain, hides a power boost inside. The fastest gravel bike - only faster.

The Exploro Racemax Boost e-bike is perfect for gravel & all-road riding. It’s light yet tough, agile yet planted and fast yet fun.

This makes the Racemax Boost a great range-extender on your gravel adventure. Or it can help you keep up with faster friends on road and gravel rides. It can even be a great commuter: arrive without a sweat, integrate an adventurous workout on the way home.

The Racemax has won many awards as the fastest performance gravel bike on earth. The Racemax Boost (left) uses the same frame - all electronic parts fit neatly inside without the need for bulkier tubes or visible cables. So you keep all the performance features of the original Racemax and add one more: extra power whenever you need it.

Our goal was to keep the fun and flow of a fast, agile gravel bike, not to build a motorcycle with pedals. That means the system has to be very light, offer a very smooth power build-up & create no drag when turned off. In the end, 3T’s customized Mahle X-35 system offers all three.

The Exploro Boost is available in both dropbar and flatbar versions to meet your needs.


3T E-bikes come with a 5 year warranty against defects in materials or workmanship. Read more on our warranty page.



Exploro RaceMax – BOOST


Mahle ebikemotion X35 System for natural power support up to 250W in super light package


250 Wh hidden battery included. Optional second battery available under the downtube

Frame material

Unidirectional pre-preg carbon, high-modulus/high-strength performance blend layup


Fango RaceMax with compact crown


3T MinMax custom by Cane Creek IS42/28.6 + IS 47/38


Superergo PRO alloy (XXS  38cm / 51 51: 40cm / 54 & 56: 42cm / 58 & 61: 44cm)


3T Apto Stealth (XXS 70mm / 51: 80mm / 54: 90mm / 56: 100mm / 58: 110mm / 61: 120mm)

Rear derailleur

Shimano GRX – long cage mechanical (RX-812)

Shift/brake levers

Shimano GRX


Shimano GRX flat-mount hydraulic disc with Shimano 160mm six-bolt rotor


Shimano GRX, 40t chainring (XXS 165mm / 51: 170mm / 54 & 56: 172.5mm / 58 & 61: 175mm)


11-speed Powerglide, 11-42


3T Discus 45 / 40, tubeless-ready – Fulcrum E-Racing 900 DB alloy wheels available B2B only


Pirelli Cinturato Gravel M, 700c, 35mm labelled width


New 3T Charlie Sqaero Team with Ritchey WCS Clamp


Selle Italia Novus Evo Boost Superflow


Invest in a new electric bike that is right for you with complete peace of mind. Test e-bikes from your home or in store.


We have taken the bikes out twice so far, around Salisbury, and have really enjoyed them, as well as the interested looks from people as we go by. I had mentioned that our road is quite a long hill rising at a good height and that we live at the top. Level 3 is fine, Level 4 easy, while Level 5 is amazing! Thank you again for all your help. We have been telling people about you and The Cycle Company and will certainly continue to do so.

Tim & Catherine (Foldable e-bike)

Amazing!!! I love bike riding!!! Cheesefoot hill no problem ... really loved the whole ride and kept up with the horse and left my husband and son for dead!!! Great bike great service dead chuffed!!! Thanks.

Lucy (Mountain E-bike)

I tried several e-bikes before settling on the Peak Trail 1 ELS – as soon as I had the test ride I knew it was the right bike for me, it was like driving a Jag vs a Ford! It’s so comfortable and smooth. It was a big benefit to use The Cycle Scheme to pay too. Thanks to The Cycle Company for all your help and advice and for seeing me on a Sunday!

Beth (Road E-bike)

Wow! I love my bike. Everything about it is classy, it looks great, and the motor is incredibly powerful, and the specs are superb. I’ve been flying up the hills and getting so many more downhills each ride. I’m the envy of my Mtb buddies! Thanks for all your help.

Guy, (Full Suspension E-Mountain Bike)