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Note : Please note that specifications are subject to change without notice, based on component availability and other factors.
The 3T 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 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.
3T's 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 ebikemotion X35 system offers all three.
Frame | Carbon: Exploro RaceMax Boost, Unidirectional pre-preg carbon, High-modulus/high-strength performance blend layup |
Fork | Carbon: Fango RaceMax w/ compact crown |
Motor | Mahle ebikemotion X35, rear hub drive unit, 250 W, 40 Nm, 25 km/h |
Battery | Mahle i250 Inner Tube Battery, 250 Wh |
Shifter | Shimano GRX, 1x11-speed |
Rear Derailleur | Shimano GRX RD-RX812, long cage, mechanical, Shadow RD+, 11-speed |
Cassette | Shimano Powerglide, 11-42T |
Crankset | Shimano GRX, 40T |
Bottom Bracket | Threaded BB |
Brakes | Shimano GRX, Hydr. Disc Brake, Flat Mount, Shimano Rotors (160/160) |
Wheelset | Fulcrum E-Racing 900, Alloy |
Handlebar | --- |
Stem | 3T Apto Stealth |
Headset | 3T MinMax custom by Cane Creek IS42/28.6 + IS 47/38 |
Seatpost | New 3T Charlie Sqaero Team w/ Ritchey WCS Clamp |
Weight | --- |
Color | Satin Grey/Glossy Grey |
Frame Size (cm) | XXS | 51 | 54 | 56 | 58 | 61 |
Seat Tube (mm) | 436 | 463 | 490 | 518 | 545 | 572 |
Top Tube (mm) | 506 | 526 | 546 | 566 | 586 | 606 |
Chain Stays (mm) | 415 | 415 | 415 | 415 | 415 | 415 |
Head Tube Length* (mm) | 125 | 147 | 161 | 180 | 201 | 232 |
Head Tube Angle (°) | 69 | 69.5 | 71 | 72 | 72 | 72 |
Seat Tube Angle (°) | 74.5 | 74 | 73.5 | 73 | 72.5 | 72.5 |
Wheelbase (mm) | 998 | 1008 | 1008 | 1014 | 1024 | 1044 |
Stack (mm) | 520 | 542 | 564 | 584 | 604 | 632 |
Reach (mm) | 355 | 366 | 377 | 385 | 393 | 404 |
Stem Length (mm) | 70 | 80 | 90 | 100 | 110 | 120 |
Crank Length (mm) | 165 | 170 | 172.5 | 172.5 | 175 | 175 |
*RaceMax fork length is equal to a standard road bike, so this headtube length can be compared to road bikes. To compare to gravel bikes with standard gravel forks, deduct 25 mm from these "road" headtube lengths for a proper comparison.
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Gender | Men |
Wheel Size | 700mm |
Groupset | Shimano GRX 11V |
collection | 2022 |
Équipement |
Carbon frame Disc Brakes Mudguard supports Fourche Carbone Internal Gaines Passage |
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