Khung Xe Đạp Ritchey Ultra Frame được thiết kế xung quanh một phuộc hành trình 120mm và khoảng cách Boost 148 siêu ổn định. Được thiết kế để phù hợp với bánh xe 29″ hoặc 27,5″, Ultra rất linh hoạt.
Thông số kĩ thuật:
- Material: heat-treated, triple-butted Ritchey Logic steel tubing - TIG welded
- Electrophoretic Deposition (ED Coat) treated for corrosion resistance
- Headset upper bearing: 41.8mm OD / IS42/28.6 (S.H.I.S.)
- Seat tube clamp size: 33.1mm (2.5Nm max for derailleur clamps and chain guides)
- Bottom bracket: 73mm - English threaded
- Designed for 1X or 2X chainrings (Side Swing front derailleur required for double)
- Recommended tire size: 27.5x2.4 (2.8 max) or 29x2.25 (2.4 max) - tire size varies by rim and tire manufacturer
- Bottle cage mounts: Two (one on downtube and one on seat tube) *Note: size small frames include only a downtube bottle cage mount
- Weight: 2,380g (M/17")
- BOOST 148mm spacing (12mm alloy thru-axle included)
- External cable routing
- Ultra-light forged and machined tapered head tube
- Headset: WCS headset included (upper IS42/28.6 | lower IS52/40)
- Headset lower bearing: 51.9mm OD / IS52/40 (S.H.I.S.)
- 30.9mm seat tube with stealth dropper routing and replaceable seat collar
- Crankset maximum ring size: 38T single - 26/36T double
- Chainline: 52mm
- Post-mount rear brake: 160mm (180mm max - adaptors available separately)
- Sizes: S (15") / M (17") / L (19") / XL (20.5")
- Optimized for 120mm (BOOST) suspension travel fork or 500mm axle-crown rigid fork
- Replaceable stainless-steel derailleur hanger
Geometry:
#aibike #ritchey
