Description
Road crankset Sram Rival22 Bb30 Yaw 50/34 No Bb
Road crankset Sram Rival22 Bb30 Yaw 50/34 No Bb .
Specifications:
- Arm material: Forged aluminum arm, machined alloy spider
- Chainring material: Machined alloy rings
- Weight: 873 g (BB30 172.5 mm 52x36 not included)
- Compatibility: Front derailleurs SRAM RED® 22, Force 22 & ; Rival 22 Yaw ? / Chains SRAM PC 1170 & ; PC 1130
- Recommended chain : SRAM PC 1130 chain
- Featured technology(ies): X-GlideR chainrings / Hidden bolt configuration
Technology:
- BB30: In addition to significant weight savings, this bottom bracket also reduces Q-factor, increases peg clearance, improves bearing durability and strengthens crank construction.
- GXP®: The GXP® Gutter Seal design reduces friction and weight, improving feel and performance.
- PressFit: A variation of the GXP external crankset, PressFit reduces weight by up to 40 grams and makes installation easier by allowing you to press the bearing cups into the frame instead of screwing them in. It requires no modification to the length and diameter of the crank axle. Pressfit 30? This is a new design from SRAM. It's all the best of the BB30 and Press-Fit bottom brackets in one exciting package. This crankset is designed for 30mm axle cranksets. The main difference with the PressFit 30 is the way the bearings are mounted in the frame. The bearings are housed in nylon cups that are pressed into the bottom bracket of the frame. PressFit 30 has an integrated seal, pre-assembled in the cups, to extend the life of the bearings. Frames will need to have a 46mm inner diameter bottom bracket to accommodate this system. The PressFit 30 for road will require a 68mm wide bottom bracket, while the PressFit 30 for MTB will require a 73mm wide bottom bracket.
Advantages:
- Significant weight savings, reduced Q-factor, more space for pegs, greater bearing durability, stiffer and stronger crank construction, simple installation. Allows the use of larger diameter frame tubes, increasing frame rigidity.
Disadvantages:
- Still looking.X-GlideR chainrings: The chainrings are designed to optimize shifting performance with the Yaw front derailleur. The stiffer rings (5mm 7075-T6 CNC-machined aluminum) feature upshift rivets with an advanced design adopted from SRAM XX. CNC machining allows precise control of the shape of each tooth, the ramp and almost all the shifting functions of the chainring. The chainrings, chain and front derailleur are designed as a single integrated system for optimized performance. Yaw? The front derailleur cage rotates to maintain a constant angular relationship with the chain. Yaw technology eliminates the need for shifter adjustment. As a result, shifting is more direct, more precise and, combined with the new Red crankset and chainrings, offers an unparalleled performance advantage for front shifting.
