Merit Jumbo 750d Carbon Gravel Bike
Conquer any terrain with our Jumbo 750d gravel bike—engineered with larger wheels for smoother rides, superior traction, and a perfectly proportioned look in larger sizes.
This bike isn't just for the tall guys. It's actually for everyone. The frame is designed for 750d wheels, but regular 700c (29") sizes can be used as well. However, in L-XXL sizes the bike looks best with 750d and that was one of our goals. To incorporate bigger wheels into a gravel bike. We don't want tall guys to look like a bear on a tricycle anymore. At the same time, increasing the wheel size on a gravel bike has several advantages.
We give riding a new dimension
Sizes L, XL, XXL looks proportionally much better.
Better rolling over obstacles on the route.
Large boost wheels absorb shocks much better.
Better traction improves braking and handling.
Better inertia of big wheels keeps speed.
When We saw that WTB could make us 5cm bigger wheels and tyres, We didn't hesitate for a moment. We did some calculations, created the geometry, made the first sample frame out of titanium and after the first tests decided right away to go for the more expensive and ligter carbon version.
FRAME DETAILS AND FEATURES
Frame Tyre Clearance
We've adapted the frame for the big 750d wheels up to 45mm tyre width, but also for the classic 700x50 (29x2.0") and narrower. You can choose which one to use.
Road Boost Axles
Because of the use of the big 750d wheels, we extended the front and rear fork to boost 110 and 148mm. There is more wheel lateral stiffness, more vertical flex and better chain line.
Keep Short Chainstay 435mm
The short chainline adds great characteristics to the bike, makes the bike more agile and adds confidence in descents.
Smart Full Internal Routing
Inside routing looks best. Cables are protected and do not interfere with front bags and so on.
T47 Bottom Bracket
Most stressed parts of the frame are robust to keep the ideal frame stiffness. Threaded T47 BB is perfect option for power transfers.
Brake Mount
The frame is ready for flat mount brakes, but directly for bigger brake rotors. Rear is ready for 160mm without any pad and front for 160mm or 180mm rotors.
UDH Hanger
One hanger what you can buy anywhere. The frame is also ready for the latest Transmission shifting.
Standard Seatpost Clamp
We used a classic and proven solution. Traditional 31.8mm band and the most common 27.2mm seatpost for maximum compatibility.
We started in 2015 as a small gravel bike dealer and we decided to start to work on our own frames. We had the opportunity to try everything possible. Over the years, together with your help, we have been figuring out what works and what direction we want to go. This is the result, our 5th gravel in a row.
BIKE FRAME SPECIFICATION
|
BB Standard |
T47 |
|
Headset Standard |
1 1/2" and 1 1/2" |
|
Frame Max Tire Clearance |
750D x 45 mm / 29"x 2.0 / 700C x 50 mm |
|
Seat Post Diameter |
27.2 mm |
|
Seat Post Clamp Diameter |
31.8 mm |
|
Brake mount front |
Flat mount |
|
Brake mount rear |
Flat mount |
|
Rotor clearance front |
160 or 180 mm |
|
Rotor clearance rear |
160 mm |
|
Maximum chainring - Shimano GRX or Sram Wide |
1x 46T (chainline 47,5 mm and more) |
|
Front through axle |
12 mm x 110 mm |
|
Rear through axle |
12 mm x 148 mm |
|
Front Derailleur Hanger |
Nope |
|
Bottle Mounts |
3x |
|
Fender Mounts |
Nope |
|
Rack Mounts |
Nope |
|
Frame Weight |
1100g (w/o fork) |
FRAME GEOMETRY
Frame Geometry (mm)
| SIZE | A | B | RC | D | E | F | FC | G | H | H“ | I | J | WB | Reach | Stack |
| L | 540 | 580 | 435 | 80 | 420 | 50 | 653 | 140 | 72 | 70 | 1 1/2'' | 1 1/2'' | 1080 | 410 | 587 |
| XL | 560 | 599 | 435 | 80 | 420 | 50 | 673 | 161 | 72 | 70 | 1 1/2'' | 1 1/2'' | 1100 | 423 | 607 |
| XXL | 580 | 619 | 435 | 80 | 420 | 50 | 693 | 183 | 72 | 70 | 1 1/2'' | 1 1/2'' | 1121 | 436 | 627 |
BEST POSSIBLE INGREDIENTS
We use best possible functional parts for best possible gravel performance, there is not neccessary to change parts just after bike purchase. All is tested before on us.
WTB (Wilderness Trail Bikes) is a leader in designing high-performance mountain biking components. Known for their innovative tires, saddles, rims, and grips, WTB focuses on creating durable and reliable gear to enhance the riding experience for cyclists of all levels.
For over 45 years, Ritchey has lead the industry in providing race-worthy, expedition ready, and championship proven components and bicycles at a price that does not require a pro contract. Shop innovative design, iconic framesets and timeless quality from Ritchey Design.
SRAM is a leading manufacturer of high-performance bicycle components, renowned for its innovation in drivetrain systems, brakes, and suspension technology. The company's commitment to quality and cutting-edge design has made it a preferred choice among professional and amateur cyclists worldwide.
Availability
Large frames will be ready during October 2024.
XLarge and XXLarge frames will be ready in January 2025.
Press and Reviews
BIKERUMOR.COM - Merit Jumbo, a Big-Wheel 750d Carbon Gravel Bike You Didn’t Know You Needed: First Rides
This carbon Merit Jumbo is the first production gravel bike to embrace 750d wheels, and we got an exclusive chance to be the first to test ride it. Yes, this is a new wheelsize. Yes, the tire and wheel options are still quite limited. But especially for taller riders, 750d could make some sense. So we wanted to give it a closer look…
OFF.ROAD.CC - Merit's Jumbo gravel bike adopts the 750d wheel standard
Around this time last year, the world was ablaze after the unveiling of Moots and WTB's collaboration in creating the 750d wheel size. Onlookers either recoiled in horror at yet another standard hitting the market or were curious about the benefits the wheels brought. Now, 750d has found itself on another bike and, for the first time, it's a carbon bike built by Merit. Meet the Merit Jumbo.