sales(at), 310 906 0826, Skype: beltdr


Availability: In stock


Quick Overview

An Urban Ninja

Shhhh. What was that? Ajax moves through the city with stealth and speed, an urban ninja in matte black. Wired bestowed the Ajax with a Gear of the Year award and called it their “favorite urban velocipede we tested this year;” lofty praise from the oracles of innovation. At the heart of this bike’s performance is its new-school drivetrain: an eight-speed Alfine internal hub and super-smooth belt drive that slices through the city like a shinobi in the night. A favorite of tech-heads and entrepreneurs from Palo Alto to Brooklyn, the Ajax delivers across the metrics that matter: performance, engineering and, with many of the same high-end features as our Acme, value. Alas, even urban ninjas must complete the mission on budget. AVAILABLE in shops now.


Double click on above image to view full picture

Zoom Out
Zoom In

More Views

* Required Fields



gates centertrack: Next generation Carbon Drive System. Unique, super-strong, carbon-reinforced polyurethane system that requires no lube and provides a nearly silent ride. CenterTrack is stronger, lighter, more compact, and better at shedding debris than the prior Gates systems.

shimano alfine 8-speed internally geared hub: Super-high quality with simple shifting and low maintenance providing a 307% gear range

spot custom 7005 aluminum: Proprietary, shaped, butted and tapered frame tubes designed for optimum strength, comfort, and durability. Lightweight aluminum tubing with precise tubing configurations for each frame size, results in a smooth and stable ride. Advanced performance styling of seat stays, top tube and down tube, in conjunction with finely tuned geometry deliver an astonishingly nimble ride in the urban environment.

spot custom carbon fork: Our newly designed all carbon fork rides smooth, yet is stronger and lighter that its predecessor. Steering is precise with the tapered carbon fiber steerer tube. Perhaps the highest performing street fork on the market.

urban rocketsled geometry: Cruise with your head up and pass on the left.

dropout compatibility: Newly designed and patent-pending Wagyū 2 Slider Dropouts allow belt-driven or chain-driven configurations, and painless wheel removal with no need to re-tension the belt.

hydration friendly: Water bottle mounts on down tube and seat tube.

fender and rack mounts: Newly designed frame and fork accommodate full fenders and racks, for urban versatility and utility.

fork: Spot Brand Carbon Disc w/ carbon tapered steerer, 1 1/8" - 1 1/2"

headset: Cane Creek 10-Series

handlebar: Spot Brand 6061-T6, 31.8mm, 620mm width, 9 deg sweep

grips: Ergon GA1 EVO

stem: Spot Brand 31.8 clamp, +/-6 degree, 50/52cm = 100mm, 55/57cm = 110mm, 60cm = 120mm

brakes/levers: Avid DB1 Hydraulic disc

crankset: Gates S300, 50/52 = 170mm, 55/57/60 = 175mm

front pulley: Gates CenterTrack, 46T, 130 BCD

rear pulley: Gates CenterTrack, 22T, SureFit

belt: Gates CenterTrack, 113T

front hub: Shimano Disc front, 32º, Center Lock

rear hub: Shimano Alfine 8-speed, disc, 32º

rims: Alex Black, AT470, 32º, aero profile, non-machined sidewalls, Presta valve

spokes: Alex 14g, stainless

tires: Kenda Tendril, 700x32C, Reflective Strip, 60tpi

shifter: Shimano Alfine 8-speed, RapidFire Plus

saddle: Spot Brand Black with Grey accents

pedals: Wellgo Black body/Black cage

seatpost:  Spot Brand Spot alloy, 27.2mm, 300mm

seat clamp: Spot Brand Spot alloy, 31.8mm

belt guard: Spot Brand Custom Belt Guard


Be the first to review this product

Product Tags

Use spaces to separate tags. Use single quotes (') for phrases.