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Retrospec Mantra Single Speed

Retrospec Mantra Single Speed
  • Color: Matte Azure Blue
  • Color: Matte Black
  • Color: Matte Crimson
  • Color: Matte Gunmetal
  • Color: Matte Olive Drab
Please select options


Ride fixed or single-speed
Mantra is designed to move with you, not against you. Our signature flip-flop hub allows you to easily switch from a single-speed ride to a fixed one. Riding fixed has its advantages (including a guaranteed workout - you don't stop pedaling!) but it's not necessary to ride that way if you don't enjoy it. Switch it up again with a flip of the rear wheel to get back to single-speed.

Repels dirt and grime
What is a "sealed cartridge bearing hub", you ask? Only the best thing since sliced bread (although, bread is pretty great). Sealed cartridge bearing hubs are a game-changer for any city rider. This feature protects delicate parts of your bike from damage that can be caused by gunk in the road. They also require less maintenance compared to their loose bearing counterparts.

Stylish and practical
Mantra's sleek steel frame and bold machined braking surface speak for itself in terms of style. Internal cable housing helps protect and keep your cables in place so there's less getting in the way of you and your ride.


Frame Hand Built TIG-welded high-tensile steel, "UrbanComfort" design, internal rear brake cable routing, two sets water bottle braze-ons & rear rack braze-ons
Fork Unicrown, Threadless, 28.6mm, 1x fender-eyelet
Rims Retrospec aluminum double-wall 32H, 40mm deep-V section, precision machined brake tracks
Hubs Retrospec large-flange aluminum alloy, sealed cartridge bearings, 32H, rear flip-flop, bolt-on
Spokes 14G Stainless steel
Tires Retrospec 700 x 28c all-season, P/V valves
Crankset Mantra Forged Aluminum Alloy 170mm x 46T x1/8"
Cassette/Freewheel 16T x 1/8"
Chain KMC C1 1/2 x 1/8"
Brakes Aluminum alloy dual-pivot side-pull calipers & aluminum brake levers
Handlebars Aluminum Alloy 520mm Wide x 30mm Rise, 25.4
Tape/Grips Retrospec UrbanComfort Kraton 125mm length
Stem Aluminum alloy 4-bolt Threadless, 80mm extension x 7° rise x 36mm rise, 25.4 handlebar clamp, 28.6 steerer
Headset 1 1/8" (28.6mm) steel, Threadless
Seatpost Aluminum Alloy Seat Post 25.4 x 300mm with Micro Adjust head
Saddle Retrospec Urban Saddle
Pedals Low-Profile Platform, Reinforced Nylon resin, 9/16"

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Matte Azure Blue / 61cm 810015703342 3664 BIK46807524E
Matte Black / 53cm 810015703373 3667 BIK412970K
Matte Black / 57cm 810015703380 3668 BIK41629727K
Matte Black / 61cm 810015703397 3669 BIK42169660K
Matte Gunmetal / 61cm 810015703496 3679 BIK45420975L