Discover the advantages of a gravel with Mahle Motor
3T BOOST e bike - 13 KG
Experience the perfect blend of speed, control, and comfort with our cutting-edge Ultra bike. Designed for both urban and off-road adventures, it adapts seamlessly to your riding style.
Aerodynamic Design
Engineered for speed, our bike’s aerodynamic frame cuts through the wind effortlessly.
Versatile Performance
Whether on city streets or rugged trails, enjoy unmatched performance and agility.
Advanced Comfort
Ride longer with our ergonomic design that reduces fatigue and enhances comfort.
Innovative Features of the Ultra Bike
Precision Engineering
Our bike features a 75mm downtube base for optimal aerodynamics and water bottle shielding.
Enhanced Control
With a carbon flatbar option, achieve superior control and a relaxed riding position.
Unmatched Clearance
Accommodates up to 61mm tires, setting a new standard for tire clearance.
Ultra Bike Geometry Specifications
Frame Size 48
Rider Height: 145-160 cm
Stack: 520 mm
Reach: 351 mm
Road Headtube: 122 mm
Seattube Length: 436 mm
Frame Size 51
Rider Height: 157-171 cm
Stack: 542 mm
Reach: 362 mm
Road Headtube: 142 mm
Seattube Length: 463 mm
Frame Size 54
Rider Height: 168-180 cm
Stack: 564 mm
Reach: 373 mm
Road Headtube: 158 mm
Seattube Length: 490 mm
Frame Size 56
Rider Height: 176-186 cm
Stack: 584 mm
Reach: 381 mm
Road Headtube: 175 mm
Seattube Length: 518 mm
Frame Size 58
Rider Height: 183-195 cm
Stack: 604 mm
Reach: 388 mm
Road Headtube: 196 mm
Seattube Length: 549 mm
Frame Size 61
Rider Height: 192 & up cm
Stack: 632 mm
Reach: 399 mm
Road Headtube: 225 mm
Seattube Length: 576 mm
Additional Measurements
Headtube Angle: 68.5° to 72.5°
Fork Axle-Crown: 375 mm
Front Center: 597 mm to 636 mm
Rear Center: 419 mm
BB Drop: 75 mm to 79 mm
Design Highlights
Downtube Neck: 60mm for optimal airflow
Aero Cutout: Shields rear wheel for speed
Minimalist Crown: Enhanced aerodynamics
Double-Drop Chainstays: Improved clearance and stiffness
Direct-Mount Brakes: Integrated for efficiency
Innovative Design for Peak Performance
Our Ultra mountain bike is engineered with cutting-edge design elements that elevate your riding experience. The 75mm downtube base fully shields the water bottle, enhancing aerodynamics, while the 60mm downtube neck optimizes airflow from the front tire. The size-specific downtube ensures compliance and space for bottles across all sizes. Our aero cutout closely fits the rear wheel, maximizing speed, and the minimalist crown reduces weight and improves aerodynamics. With a pure-road fork length, enjoy better stiffness and steering geometry, making the Ultra feel like a road bike even on rugged terrains.
“The Ultra mountain bike has transformed my rides. Its road bike feel and superior aerodynamics make every journey exhilarating.”

Alex Johnson
Professional Cyclist
“I love the Ultra’s innovative design. The handling is precise, and the comfort is unmatched, even on the toughest trails.”

Samantha Lee
Adventure Enthusiast
“Switching to the Ultra was the best decision. Its performance on both urban and rugged paths is exceptional.”

Michael Chen
Commuter
“The Ultra’s engineering is remarkable. It feels like a road bike but handles like a pro on mountain trails.”

Emily Davis
Mountain Biker
Experience the Ultra Difference
Ready to elevate your cycling adventures? Explore our Ultra mountain bike options today. Whether you’re seeking speed on the road or control on rugged trails, the Ultra delivers unmatched performance. Visit GRAVEL BIKES.cc and join the community of riders who trust our innovative designs. Don’t miss out on the opportunity to own a bike that redefines versatility and performance. GRAVEL BIKES shipped worldwide.
