Cannondale welcomes us their 2011 versions of a cyclocross bike, the 2011 Cannondale CAADX.
The SRAM Rival and 105 both possess the same bike frame–a CAADX cyclocross, optimized 6061 alloy, BB30–while Tiagra has the same but lacks the third one. All three cyclocross bikes use the same fork, rims, hubs, spokes, tires, pedals, seat post, saddle and headset.
On the other side, the three differ in cranks, brakes, and brake levers. The CAADX 105 and Tiagra possesses the same stem, which is a Cannondale C4, 31.8mm whereas SRAM Rival makes use of a Cannondale C3, 31.8mm stem.
A bottom bracket out of FSA BB30 and a Control Tech Elite handlebar can be seen on both the SRAM Rival and 105 ‘cross bike, as the Tiagra makes use of a FSA mega Exo and Cannondale C4 compact respectively.
The 2011 Cannondale CAADX SRAM Rival comes in a race red (gloss) color, CAADX 105 in brushed aluminum, and Tiagra in jet black (matte) finish. With an estimated retail price of $1800 for the Cannondale 2011 CAADX SRAM Rival, $1300 for CAADX 105, and $1100 for CAADX Tiagra, all-in, the line comes at a bargain.