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No. 22 Bikes

No. 22 Bikes Reactor Road Race

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The Reactor is intended to be the most race-oriented road frame in the No. 22 lineup. With an emphasis on stiffness, responsive handling and light weight, the Reactor is the perfect titanium stage race tool.

When developing the Reactor, we set out to increase the already high levels of drivetrain stiffness offered by our versatile Great Divide road bike. To achieve this, the Reactor features an oversized down tube and chain stays, both of which are among the largest offered on a titanium frame. The Reactor’s chain stays are a full 25.4mm in diameter, ovalized to 30mm at the bottom bracket for increased stiffness. When coupled with the bike’s oversized head tube and size-specific butting and tubing sizes, the result is a bike that responds crisply and immediately to hard efforts.


"There are bikes that make you feel fast, bikes that make you look cool, and bikes that imbue a sense of strength, power and invincibility. Every so often, a bike comes along that carries all of these traits and leaves its rider speechless. No. 22's Reactor is one of these and one of the challenges when reviewing it is to know where to begin." - RIDE Cycling Review issue #72, June 2016


The Reactor employs a number of features to increase rider comfort over endurance length races. The most striking of these features is the carbon seat mast. Expertly bonded to a set of titanium lugs, the continuous carbon tube running from the Reactor’s bottom bracket to the saddle provides vertical compliance and vibration damping at the saddle. Adding to this compliance are the Reactor’s svelte 13mm seat stays, which help retain the signature smooth ride of titanium.

Key features include:
  • Frame material: 3Al-2.5V CWSR titanium with carbon seat mast
  • Point of origin: Handmade in the USA
  • Warranty: Ten year warranty against manufacturing defects
  • Tubing sizes: Fully butted, size specific
  • Head tube: Tapered 44/47mm internal diameter for integrated headsets
  • Bottom bracket shell: T47 threaded
  • Tire clearance: 28mm (frame) / 25mm (fork)
  • Rear brake cable routing: internal


Like all No. 22 frames, the true beauty of the Reactor lies in its details. The frame’s head tube is a custom tapered titanium component with extensive internal machining. Featuring CNC-machined support for an integrated headset, the head tube enables substantial front end stiffness while saving weight. Forgoing our traditional solid titanium head tube badge, the Reactor head tube features a CNC machined logo to save every available gram.

Topping the frame’s carbon seat mast is our bespoke cast titanium seat mast topper. Weighing just 120g including hardware, the titanium topper is a light and elegant solution to retaining height adjustability on a seat mast equipped frame. For customers concerned about flexibility and resale with a seat mast equipped bike, the Reactor’s seat mast can be cut off entirely to accept a conventional 30.9mm seat post and clamp.

Connecting the Reactor’s massive chain stays and svelte seat stays required a unique set of dropouts. The Reactor uses a hooded style dropout with an extended flange to allow for ample weld surface area at the chain stay. The dropouts are tapered to accept the smaller seat stays, and are further relieved to minimize weight. The result is a stiff and very strong rear triangle, which translates into crisp and responsive ride quality.


In addition to our standard "raw" finish, the Reactor is available in one of six anodized colours as a $300 option.


All of our frames are made to order. Below are some of our most common custom options and pricing. For custom inquiries, please get in touch by email.

Custom options include:
  • Custom geometry ($500)
  • Fender and rack mounts ($100)
  • Electronic cable routing ($125)
  • Alternate bottom bracket shells ($0-100)
  • S&S titanium couplers ($1,000)


Size 50cm 52cm 54cm 56cm 58cm 60cm
Effective top tube length (mm) 515 530 545 565 580 600
Seat tube, center-center (mm) 456 477 499 517 542 571
Head tube length (mm) 100 120 140 160 185 205
Seat tube angle (deg) 74.5 74 73.5 73 73 72.5
Head tube angle (deg) 72 73 73 73 73.2 73.5
Front center (mm) 567 570 581 596 609 621
Chain stay length (mm) 405 406 408 410 410 410
BB drop (mm) 72 70 70 70 68 67
Reach (mm) 374 379 383 394 401 411
Stack (mm) 503 523 542 561 584 603