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Jamis Boss 7-Speed Step-Over

Jamis Boss 7-Speed Step-Over
  • Color: Raspberry
  • Color: Blue Lagoon
  • Color: Vanilla Mint
Size: Select size
Please select options Unavailable
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These one-piece single-loops stays with trailing dropout plate have been a Boss signature since 1980. Reducing the number of rear triangle welds makes these frames stronger and stiffer. And we don’t have to swage the tubes to a smaller diameter to mate with standard tabbed dropouts, allowing the stays to remain near constant in diameter, yielding an even stronger frame with a bigger, bolder style.

Many cruisers weigh well north of 40 pounds. Not so with the Boss! Because nothing gets more uncomfortable faster than having to pedal more weight than necessary, we’ve pared as many grams from these bikes as we could. Starting with the lightweight aluminum frame and a parts pick that’s nearly all lightweight alloy parts. The results are bikes just north of 30 pounds that are easy to pedal and more fun to ride.

All Boss frame sizes (and there are six to assure the best possible fit for greater comfort and more secure handling) offer an extra-long stem quill and head tube and hi-rise handlebars for a comfortable, upright ride position

The Boss Saddle is as plush as it gets—quilted top, wide body, fully stuffed, double-loop springs—and is offered in both male- and female-specific lengths and widths. The Taxi saddle is as durable as it gets, with an extra-thick 3 mil cover to resist puncture, a flat top that won’t pool water when the Taxi is parked in the rain, box section rails that will never bend, and double-loop springs that comfortably support passengers.

Our comfort tires have been designed to roll smoothly on pavement, but offer a large 2.35" footprint so that rides on park paths can be managed securely. The additional benefit of that big footprint is larger air volume in the tire and tube, which results in lower air pressure for a more comfortable ride than tires with smaller volumes and higher air pressures.

Our cruise-control handlebars were designed to promote a comfortable no-weight-on-the-wrists riding position. With just the right sweep and rise, these handlebars meet the rider’s hands without requiring a forward bend at the waist, relieving pressure on the back of the neck. Handlebar width has also been carefully calculated so that when steered from left to right it does not contact the rider, unlike many other cruiser-style handlebars.

Many of the parts specified on our Boss are made of aluminum to save weight, but also to help preserve the finish of the bike. Aluminum parts include the seat post, seat clamp, stem, rims, front hub, kickstand, and crank arms. We’ve even specified a specially treated chain on the Taxi that protects the chain against rust in even the harshest conditions. In fact, this coating increases the rust-resistance of the chain up to 500 times (!) that of a regular chain.


Frame Diamond frame design with 6061 aluminum oversized tubing, sloping top tube design, water bottle bosses, alloy kickstand, and painted steel chainguard
Fork Oversized hi-tensile steel tubular unicrown with leading dropout and fender boss
Headset Internal cup, threaded, 1 1/8”
Rims Alex Y303 36H black anodized alloy rims
Hubs Alloy nutted hubs
Spokes 14 gauge stainless steel
Tires CST Metropolitan Palm Bay, 26 x 2.35"
Crankset Forged alloy crank, 170mm alloy
Chainrings 44T compact disc
Bottom Bracket Sealed cartridge, 68 x 122.5mm
Chain KMC Z51NP, silver
Rear Derailleur Shimano TY-300
Cassette/Rear Cogs Shimano, 14-28, 7- Speed
Shifters Shimano RevoShift RS-35, 7-speed
Handlebars Jamis Cruise-control comfort bar
Tape/Grips Comfort style
Stem Alloy hi-rise, 180mm quill, 100mm extension, with removeable 2-bolt cap
Brake Levers Tektro CL530 alloy levers
Brakes Tektro alloy linear pull brake
Pedals Cruiser platform with grip tape
Saddle Boss Cruiser design with extra padding and heavy-duty, double-loop springs
Seat Post Alloy micro-adjust, 27.2 x 300mm, with 31.8mm alloy clamp and cromo seatpin

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Raspberry / 14-inch 845436070551 06-4427RB 210000039213
Raspberry / 18-inch 845436070582 06-4430RB 210000039216
Blue Lagoon / 14-inch 845436082851 06-4602BL 210000039214
Blue Lagoon / 18-inch 845436082868 06-4603BL 210000042833
Vanilla Mint / 14-inch 845436076935 06-4560MN 210000040817
Vanilla Mint / 18-inch 845436076942 06-4561MN 210000040797