Tired of choosing between portability and performance? We present the definitive solution: a custom-engineered, full titanium 18-inch tri-fold bike that shatters compromises. While Brompton’s G Line offers larger wheels at a weight penalty, and the T Line prioritizes lightness with smaller 16″ wheels, our innovation merges the best of both worlds. We’ve reimagined the classic Brompton geometry with fully 3D-printed titanium front and rear forks, creating a bike that is as light as a T Line (approx. 8kg) yet rides with the confidence and capability of a Birdy GT.
This is not just a modification; it’s a new class of folding bike, designed for the rider who refuses to sacrifice.
Unmatched Performance & Ride Quality
- Superior 18″ Wheel Advantage: Moving beyond the limitations of 16″ wheels, our bike accommodates 18×2.0″ or even 406×1.25″ tires. This larger diameter and wider contact patch deliver enhanced roll-over ability, superior grip, and sharper cornering stability. The experience is transformative—closer to a performance gravel bike than a traditional folder.
- Gravel-Ready Disc Brakes: Equipped with a high-performance disc brake system, the bike offers unwavering stopping power in all conditions, a significant upgrade over standard rim brakes.
- Optimized Titanium Frame: The entire frame, including the custom 3D-printed forks, is crafted from aerospace-grade titanium. This not only ensures a stunning sub-8kg weight but also provides exceptional vibration damping, leading to a ride that is both lively and comfortable.
The Classic Fold, Perfected
We’ve retained the ingenious and fast (approx. 20-second) tri-fold mechanism that made the original famous, but we’ve refined it for the 18″ platform.
- Surprisingly Compact: Despite the larger wheels, the folded volume remains incredibly compact, rivaling that of standard 16″ models. The careful geometry adjustment ensures a tidy package.
- Uncompromised Portability: Weighing around 8kg, it’s effortlessly easy to carry with one hand. The optimized weight distribution, partly due to the carbon fiber components, makes the folded bike more stable when rolled on its custom rack, eliminating the common issue of the front wheel dragging.
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Proven Real-World Usability: The folded package fits seamlessly into car trunks (45cm depth) and public transport luggage racks (55cm height limit), making it the ultimate companion for mixed-mode commuting.
Technical Highlights & Direct Benefits
- Eliminated Headset Creak: The one-piece 3D-printed titanium front fork completely resolves the persistent headset creak sometimes found on T Lines under heavy pedaling.
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Refined Geometry: The wheelbase is thoughtfully designed to be slightly longer than a Birdy’s, enhancing high-speed stability. The bottom bracket has been slightly raised for improved ground clearance, making it adept at handling light gravel and uneven urban terrain.
- Future-Ready Design: The platform is engineered with evolution in mind. Future iterations will easily accommodate 20″ wheels with a 130/140mm open standard, allowing for compatibility with top-tier electronic groupsets from Shimano and SRAM.
Summary: The One Bike to Do It All
This 18-inch Titanium Tri-Fold is the culmination of intelligent design and advanced manufacturing. It successfully unites the lightweight, compact fold of a T Line with the rugged capability and ride quality of a Birdy GT.
It is the perfect choice for the discerning urban explorer who demands a single bike that excels at daily commuting, weekend adventures, and everything in between.
Stop compromising. Experience the future of folding bikes.
This groundbreaking model is now in stock and available for immediate delivery.
Visit our website to learn more and secure yours.