Bassi X Keystone Belmont Frameset
A Bassi X Keystone Bike Co. collaboration for all roads, randonneuring and light touring
The Belmont restock is due toward the end of the summer of 2026
Please purchase directly through Keystone Bicycle Co. if you're in the US.
The Belmont is an all-road, randonneuring, light-touring bicycle frame designed in collaboration between Bassi Bikes and our friends at Keystone Bicycle Co. based in Philadelphia, PA.
This all-new model combines our design and manufacturing knowledge at Bassi, and the KBC crew's long-distance randonneuring experience.
Colours are not necessarily representative when viewed on a screen. Please be prepared to accept slight differences in hue from the colours you see here.
Bassi frames ship for flat rates in Canada, the US, and Europe. Please contact us for a quote in other regions.
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The Belmont is an all-road, randonneuring, light-touring bicycle frame designed in collaboration between Bassi Bikes and our friends at Keystone Bicycle Co. based in Philadelphia, PA.
This all-new model combines our design and manufacturing knowledge at Bassi, and the KBC crew's long-distance randonneuring experience.
The result of our serendipitous joining of ideas and experiences is a versatile, capable and comfortable frame that'll be the perfect companion for many things involving paved and unpaved road, gravel, carrying much or little stuff, and so on. The sturdy construction, versatile design, time-tested standards and the tough E.D.-coating and finish make for a frame that, with a little care and attention, will treat you well for many, many years. It's the kind of frame that can take on lots of different configurations and evolve as your needs do, too.
For the full backstory on developing the Belmont, check out our introductory blog post here!
Stock complete builds are also available in what we consider to be a great all-around configuration. If you'd like just the frame, we'll gladly install any in-stock headset, bottom bracket or other parts for free when combined with our Frame Prep Labour.
For a fully custom build, shoot us an email!
A note on frame prep:
Although Bassi frames, as well as many others, go through many quality control steps and come almost immaculate from the factory, some imperfections may still arise. Usually, paint is the culprit by being applied slightly unevenly or being oversprayed and covering some threads. The result, in the case of a headset or a bottom bracket, is uneven surfaces or imperfect planes which can cause binding and/or premature wear of the bearings. Bottom bracket and headset bearings work at their very best when they're perfectly in line and parallel to each other! In the case of overspray on the threads, it can make fender or rack installations more of a headache than they need to be. With the help of C&L's very fancy facing, chasing, reaming and tapping tools, installing parts on your new fully prep'd frame will be a breeze!
With a Frame Prep Labour on a new or newly painted frame, we will:
- Face the head tube and bottom bracket shell
- Ream the head tube when necessary
- Chase bottom bracket shell threads when necessary (almost never)
- Tap threaded braze-on eyelets
- Face flat mount brake caliper contact points
When you add a Frame Prep Labour to a Bassi frame purchase, we'll install new in-stock headsets and bottom brackets for free!
Details and measurements
Frame & Fork
Frame
4130 CrMo steel frame
Geometry optimized for front-loading
Clearance for 650x48B or 700x45C
Ideally used with drop-bars, but all bars are welcome!
EC34 headset (1-1/8" standard)
ø28.6mm steerer
ø27.2mm seatpost
BSC threaded bottom bracket (1.37" x 24TPI), 68mm shell width
Flat-mount disc brakes, ø160mm rotor minimum
Downtube mounts for shifters or cable guides
Internal rear brake routing, along the downtube only
Internal dynamo routing front & rear
Integrated cast seatpost clamp
12x142mm rear thru-axle
Replaceable derailleur hanger
A reasonable amount of eyelets: Plenty of rack, cage and fender attachement options without adding 3kg worth of bolts
Eyelets on the seat tube and under the top tube for our signature Bassi Shoulder Strap (strap not included)
E.D.-coating throughout to prevent rust and increase scratch and scuff resistance.
Fork
4130 CrMo steel fork
ø28.6mm steerer
12x100mm thru-axle
30mm fork crown race
Flat-mount disc brakes, ø160mm rotor minimum
Hidden front dynamo light routing
Lowrider, mini-rack, and dropout eyelets
Fender eyelets
Threaded under-crown fender plate
Included
Front and rear thru-axles (M12xP1.5x161mm rear, M12xP1.5x121.5mm front)
Seatpost clamp bolt
Bottom bracket shifter cable guide and bolt
Geometry












| Size | A | B1 | G1 | G | C | D | Stack | Reach | H | I | Tire | PBH |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| S | 485 | 525 | 70.5 | 73.5 | 430 | 67 | 545 | 364 | 55 | 400 | 650x48B,700x42C | 780 |
| M | 535 | 547 | 71 | 73.5 | 430 | 67 | 565 | 380 | 55 | 400 | 650x48B,700x42C | 815 |
| L | 575 | 564 | 71.5 | 73.5 | 440 | 67 | 600 | 386 | 55 | 400 | 650x48B,700x42C | 850 |
| XL | 615 | 587 | 71.5 | 73.5 | 440 | 67 | 643 | 396 | 55 | 400 | 650x48B,700x42C | 890 |
Belmont inspiration
Belmont inspiration
A fast, 700C randonneuse