Retrospec Bicycles - Mars-7 Diamond Seven-Speed City Bike Black / 50cm, Retrospec Bicycles - 1

Mars-7 Diamond Seven-Speed City Bike

$ 349.99
Midnight Blue
Suggested Height:
5'2" - 5'9"
sizing & geometry

Earth to Mars

The Retrospec Mars seven-speed city bike is designed with commuters in mind. An unbeatable opponent is produced from a union between our lightweight, heavy-duty diamond frame, top-of-the-shelf Shimano drivetrain, and advanced component set.

The Drivetrain

The Shimano Altus 7-speed drivetrain will conquer all kinds of terrain with you. Whether you’re riding on flat or hilly trails, smooth or rough roads, or paved or dirt paths, you can count on this system. Ride for longer more comfortably and always be in control. The Shimano Altus makes climbing inclines more manageable than ever before.

Our Mars seven-speed city bike is also equipped with the RevoShift grip shifter. This shifting mechanism is integrated into the handlebars, so you can switch gears without ever sacrificing control of your ride. Changing speeds with RevoShift is intuitive, straightforward, and convenient.

The Build

The classic diamond frame on the Mars seven-speed city bike is hand-built, tig-welded, and made of high-tensile strength steel. It’s designed for longevity, comfort, and reliability. The progressive geometry and handlebar location encourage an upright riding position, reducing the strain on your neck and back, especially as you ride longer distances.

The Accessories

Mars city bikes sport retro-inspired elements, like a chrome headlight, a mid-century bell, frame-matching fenders, and a polished rear rack. Cushiony grips and saddle make the ride more comfortable while front and rear brakes make the ride even safer. Kenda commuter tires grip the road even if it’s wet. Water dispersion grooves through the tread of these tires reduce slippage for an in-control ride.

We strongly suggest that you take your bike to a professional bicycle mechanic to be built and/or checked out. Incorrect assembly of your bike could result in premature wear and/or failure of individual components. The brakes and derailleurs are not yet set up and need to be properly adjusted in order to stop and shift correctly.


      Included Accessories: Chain Guard, Center Mount Kickstand, Classic Bell, Vintage Style Bullet Head Lamp, Fenders, Tools
      Frame: Lightweight Hand-Built Diamond High-Tensile Strength Steel Frame with Rack and Fender Braze-Ons
      Fork: Lightweight Hand-Built Classic Urban Fork
      Bottom Bracket: Neco Sealed Cartridge Bearing 110.5mm
      Headset: Neco 1"
      Handle-Bar: Alloy Riser City Bars 620mm, 60mm rise, 15° sweep, 25.4 Center
      Stem: Alloy 30º Rise, 25.4 Clamp, 1" Quill Stem
      Grips: Extra-Soft Brown Rubber
      Shifter: Shimano 7-Speed Revoshift Grip-Twist Shifter
      Brake & Lever: Alloy Dual Caliper Brake & Alloy Four Finger Lever
      Rims: 700c Stars Double-Wall Alloy Rim 30mm with Eyelets 32H w/ machined sidewall
      Front Hub: KT 100mm spacing, 32H with quick release hubs
      Rear Hub: KT 135mm spacing, 32H
      Derailleur: Shimano Altus
      Tires: Kenda Commuter 700 x 32c, Gumwall
      Tubes: Kenda 700 x 32c, Presta Valve
      Crank: Protek Alloy 170mm, 44T Chainring
      Chain: KMC Z410, 1/2x3/32"
      Seat Post: Alloy 25.4 x 300mm
      Seat Clamp: Alloy 28.6
      Saddle: Synthetic Leather
      Pedals: Urban Pedal Alloy 9/16"
      Recommended Weight Limit: 220 LBS


      Shipping on all orders over $65 heading anywhere within the contiguous U.S. is free. Shipping on orders under $65 will cost a flat rate of $7.98. You can also choose to have signature required when your products are delivered for an additional $5.98.

      We try really hard to ship all orders within 1 business day, but sometimes we're backed up. Most orders will go out within 3 business. Your order will be delivered within 1-5 business days.

      We ship most of our orders out through FedEx. Keep this in mind when you're choosing a shipping method. If you don't request a signature and you're not home when FedEx arrives, it is left up to the driver's discretion to leave the package or not. Sometimes we send smaller orders out through USPS.

      Check out more information about our shipping policies here.

      Returns Policy

      Great news! We offer a 50 day return policy! Returns are accepted for the full product credit if received at our warehouse within 50 days of the date of purchase in the original packaging that is still in retail condition.

      Please bear in mind that our refunds do not include reimbursement of shipping fees.

      Check out more information regarding our return policy here.

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