Retrospec Mantra Fixed-Gear / Single-Speed Bike

Size Chart
size-guide-retrospec
Size
Color
Matte Azure Blue
Matte Black
Matte Gunmetal

IN-STORE PICKUP ONLY. WILL NOT SHIP.

Mantra is our premium fixie/single-speed. Quick response dual braking, sealed bearing hubs, and dripping with style, Mantra is your go-to for your every commuting, cruising, zipping, coasting and speeding need.

Mantra comes standard with sealed cartridge bearing hubs to keep your bike clean and healthy. Less dampness, water, and grime can get into the delicate parts of your bike when the hubs are sealed. This means less required maintenance and a longer living bicycle.

Mantra comes installed on the single-speed side. This is a bike you can ride regularly and quickly and easily transform into a fixed-gear whenever you like.

We have very high standards. Every single element that goes anywhere near our bikes undergoes serious scrutiny. The Kenda commuter tires we pick have a unique tread with water dispersion grooves. There is more surface area on these tires and water travels through the channels on the tire. This means you have more traction and better grip on the road but also minimal resistance. The double-wall super deep-V Star rims with a machined braking surface and the always dependable KMC chain ensure a smooth ride.

Frameset:

  • Hand Built tig-welded high-tensile steel, "UrbanComfort" design, forged horizontal rear dropouts with integrated chain tensioners, bar-spin clearance with no toe overlap
  • Unicrown, Threadless, 28.6mm, fender-eyelet
  • Internal rear brake cable routings
  • 2 sets water bottle braze-ons
  • Rear rack braze-ons
  • Decals protected by clear-coat

Drivetrain:

  • Crank: Mantra Forged Aluminum Alloy 170mm x 46T x1/8"
  • Chain: KMC C1 1/2 x 1/8"
  • BB: Sealed Cartridge
  • Freewheel: 16T x 1/8"

Wheelset:

  • 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
  • Retrospec 700 x 28C all-season, P/V valves

Components:

  • Headset: 1 1/8" (28.6mm) steel, Threadless
  • Brakes: Aluminum alloy dual-pivot side-pull calipers & aluminum brake levers
  • Handlebars: Aluminum Alloy 520mm Wide x 30mm Rise, 25.4
  • Grips: Retrospec UrbanComfort Kraton 125mm length
  • Stem: Aluminum alloy 4-bolt Threadless, 80mm extension x 7⁰ rise x 36mm rise, 25.4 handlebar clamp, 28.6 steerer
  • Saddle: Retrospec Urban2
  • Seatpost: Aluminum Alloy Seat Post 25.4 x 300mm with Micro Adjust head
  • Seatpost Clamp: Aluminum alloy CNC precision 28.6mm
  • Pedals: Low-Profile Platform, Reinforced Nylon resin, 9/16"
Recommended Weight Limit: 250 LBS