Size chart and fit guide for 2026
sixthreezero takes a comfort-first, universal-fit approach to sizing. Most adult models use a single frame size per wheel diameter (24" or 26") with adjustable seat posts and handlebars to accommodate a wide range of riders. Their proprietary BodyFit sizing tool matches riders to the ideal bike based on height, weight, and riding style, while their forward-pedaling design lets shorter riders achieve full leg extension without raising the seat uncomfortably high.
| Size | Height Range | Inseam Range |
|---|---|---|
| 24" | 4'0" - 5'5"(122 - 165 cm) | 21.7" - 29.5"(55 - 75 cm) |
| 26" | 4'12" - 6'4"(152 - 193 cm) | 27.2" - 35.0"(69 - 89 cm) |
| Size | Height Range | Inseam Range |
|---|---|---|
| 26" | 4'12" - 6'4"(152 - 193 cm) | 27.2" - 35.0"(69 - 89 cm) |
Specific sizing recommendations for sixthreezero's most popular bike models. Geometry measurements shown for reference size (typically M or 54cm).
The flagship hybrid cruiser with forward-pedaling design that places pedals about 3 inches ahead of the seat tube. This lets riders keep the seat lower while achieving full leg extension, making it easier to put both feet flat on the ground when stopped. Available in step-through frames for both men and women. Fits riders 5'0" to 6'4" on the 26" model.

Classic beach cruiser available in single-speed, 7-speed, and 21-speed configurations. Upright riding position with swept-back handlebars and a wide padded seat. The step-through frame makes mounting and dismounting easy. Best for flat terrain, boardwalks, and casual neighborhood rides.

Versatile hybrid designed for both paved roads and packed trails. Features a front suspension fork for bump absorption, Shimano 7 or 21-speed gearing, and slightly more forward-leaning geometry than the EVRYjourney. A good choice for riders who want one bike for mixed terrain without sacrificing comfort.
Purpose-built for riders who experience back, shoulder, or wrist pain. Features a dual-spring ergonomic saddle, suspension fork, and frame geometry engineered to keep the spine aligned and reduce pressure points. The step-through frame and upright position make it ideal for seniors and riders recovering from injuries. Fits riders 5'3" to 6'0".
Electric version of the flagship EVRYjourney with a 500W rear hub motor and removable 48V lithium-ion battery. Offers up to 20 miles on full electric or 40 miles with pedal assist. Same forward-pedaling comfort geometry as the standard EVRYjourney with added disc brakes for safer stopping at higher speeds. Available in both men's and women's step-through frames.
The classic Around the Block cruiser with electric assist. Features a 500W motor, integrated front and rear lights, and disc brakes. The relaxed cruiser geometry remains unchanged from the pedal version, providing the same comfortable upright riding position with the added benefit of electric pedal assist for hills and headwinds.
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Helmets, saddles, lights and locks that fit any sixthreezero build.

Bell
This ASIN is Small/Medium 52-57 cm. Check the selected Amazon size/color before checkout.

Avasta
Standard saddle rail spacing fits most kids' seatpost clamps. Designed primarily for 12-20" wheel kids' bikes; larger riders may prefer a wider adult saddle.

Bell
Tool-free handlebar mount; check bar space around computers, bells, and baskets.

Abus
Inner dimensions: 5.5" x 8" (14 x 20cm). Premium size for frame + wheel security. Heavy-duty for high-theft areas.

Camelbak
Standard 73mm bottle diameter. Optimized cage fit for most bike bottle cages.

Giro
S 51-55 cm, M 55-59 cm, L 59-63 cm
See why sixthreezero is a great fit for Riders with Back Pain
E-Bike Riders Sizing GuideSee why sixthreezero is a great fit for E-Bike Riders
Senior Riders Sizing GuideSee why sixthreezero is a great fit for Senior Riders
Short Riders Sizing GuideSee why sixthreezero is a great fit for Short Riders
Women Cyclists Sizing GuideSee why sixthreezero is a great fit for Women Cyclists
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