To top their 2007 innovation of Zipp-inspired deep carbon rim aero wheels, SRAM decided to release a three-model range of road wheels with aluminum rims. This 2010 item is designed especially for rides that have a typically standard depth and minimal spoke counts of 18 front/20 rear.
If without the rim tape and skewers, the range wheel weighs about 1620g. It has a tangent non-drive side rear spoke arrangement that is similar with other brands. However, SRAM uses a 27mm deep rim with a traditional cross section. This is good for fast training since it comes out to be like an entry-level wheel.
This new range has the S27 Al Comp. This meant cartridge bearing hubs, the all-radial front/radial drive side and bladed Sapim CX spokes with brass nipples.
The S30 Al Sprint has the Sapim CX-Sprint spokes, internal aluminum nipples and black mirror finish. The S30 Al Race also comes with bladed CX-Ray spokes, internal aluminum nipples and a “Black Diamond” titanium carbide finish.
The S30 Al Cprint and S30 Al Race wheels share a semi-aero aluminum wheel with a hybrid-toroidal cross-section. SRAM designed the rim to reduce aerodynamic drag and improve air penetration. It comes out looking like the cross-section of Zipp’s aero wheels that’s been squashed.
All three wheel sets will be compatible with SRAM/Shimano freehubs. Probable availability will be midyear of 2010.