Dialed-in fit and performance on the trail | The Cylinder II mountain bike shoe offers the comfort you'd expect from Giro with the convenience and precision of a BOA® dial closure. With a single dial and a set-and-forget front strap, you can get into your shoes and onto the trails in no time. The BOA L6 dial offers 1mm adjustment increments when tightening, and a macro-release function to get out of the shoe. The upper construction provides great support and breathability, while our proprietary co-molded nylon and rubber lugged outsole provides remarkable durability with reliable traction on almost any surface.
BOA® L6 DIALS — The BOA® L6 Fit System provides fast, effortless, precision fit with the turn of the dial. The combination of the dial, lace, and guides reduces weight and provides effortless adjustment (1mm increments) compared to traditional buckles, and offers an incremental release function, too. BOA Fit System dials and laces are guaranteed for the lifetime of the product.
DUAL-INJECTED RUBBER OUTSOLE — Our dual-injected outsole combines an injection-molded nylon and glass fiber plate for powerful, efficient pedaling that's fused with an aggressive rubber outsole for impressive durability, grip, and traction in rocks and mud.
Upper: 85% Synthetic PU Leather (60% PU / 40% Nylon), 10% Textile (100% Polyester), 5% TPU; Lining: 100% Textile (100% Polyester); Sole: 50% Injection (70% Nylon / 30% Glass Fiber), 50% Rubber Cement Construction
| Size | US | UK | CM | ACTUAL insoles length in: mm |
|---|---|---|---|---|
| 41 | 8 | 7 | 26 | 256 |
| 42 | 9 | 8 | 27 | 264 |
| 43 | 9.5 | 8.5 | 27,5 | 270 |
| 44 | 10.5 | 9.5 | 28 | 275 |
| 45 | 11 | 10 | 29 | 282 |
| 47 | 13 | 12 | 30 | 297 |
NOTE! To avoid unnecessary exchanges or returns of purchased footwear - when choosing the size you are ordering, PLEASE stick to the following rules:
A. The insole lengths in mm given in the last column are the ACTUAL, total lengths measured by ourselves.
B. PLEASE CHOOSE a size whose insole is 5mm to 10mm longer than the actual length of your bare foot (ROAD shoes closer to 5mm, MTB / GRAVEL / ENDURO shoes closer to 10mm).
C. How to measure your foot?
- Place the heel against a wall or e.g. furniture, and place something rigid, such as a book, perpendicular to the toes
- Measure the distance between the wall and the book.
- You should check both feet, because quite often one is longer :)









