Size chart and fit guide for 2026
MarKnig is an Amazon-direct budget brand that sells a tiny, focused lineup: two 700C road bikes and one 26" hardtail mountain bike, all built around a single-frame, adjustable-fit philosophy. Every model uses one frame size for riders 5'2"-6'0" with quick-release seatpost and adjustable handlebars - so sizing is by rider height, not by labelled S/M/L. Maximum rider weight is 330 lb across the lineup.
| Size | Height Range | Inseam Range |
|---|---|---|
| One Size (700C) | 5'3" - 6'0"(160 - 183 cm) | 29.5" - 35.0"(75 - 89 cm) |
| Size | Height Range | Inseam Range |
|---|---|---|
| 26" Wheel | 5'2" - 6'0"(157 - 183 cm) | 28.7" - 35.0"(73 - 89 cm) |
Specific sizing recommendations for MarKnig's most popular bike models. Geometry measurements shown for reference size (typically M or 54cm).

Aluminum-frame entry road bike with 700C wheels (labeled as 26") and 21-speed Shimano-style twist shifters. Single frame size fits riders 5'3"-6'0" via adjustable seatpost and stem. Max rider weight 330 lb. Dual V-brakes - no disc upgrade path. Comes ~85% pre-assembled with kickstand, water bottle cage.

Step-up MarKnig road bike with the same aluminum 700C frame but a 14-speed drivetrain, three-spoke aero-styled wheels, and dual disc brakes. Single frame size for riders 5'3"-6'0", up to 330 lb. Comes 85% pre-assembled.

Budget hardtail mountain bike with widened high-carbon steel frame, 7-speed drivetrain, front suspension fork, and V-brakes. 26" wheels fit riders 5'2"-6'0" via quick-release adjustable seat. 90% pre-installed. The cheapest entry into MarKnig's lineup.
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Helmets, saddles, lights and locks that fit any MarKnig 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
Use our free calculators and guides to determine your ideal MarKnig frame size.
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Universal bike sizing tool
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