The following bike sizes Jamis are similar in many respects, but there are also variations. If you are going to buy one of these, it helps to know some of their specifications.
The X3 has 31.6 x 300mm alloy micro-adjust with alloy. It also has a protective front and rear guards, SL cover, ATB with pressure relief channel saddle and 26″ x 1.95″ front and rear tires. It also has 14g black electro-plated spokes, alloy 6-bolt disc hubs with QR front and rear hubs. There is also the Alex TD-25 double-wall rims. The X3 also has Kraton for trigger-shift grips, VP threadless, 1 1/8″ headset, XC alloy threadless stem: 10 degrees rise x 90mm (12-15″), 120mm (21″) and 110mm (19″).
The bike also has XC riser, 6 degrees sweep x 13mm rise x 620mm handlebars and Shimano alloy brake levers. It also has Tektro
mechanical disc brakes with 6″ rotors and Shimano levers.
Ventura Sport 2012 Road Bike
The 61cm variant is for riders 75 to 78 inches tall. The 51cm is for those who are 63 to 65 inches tall. There are also bikes for those 65 to 68 inches tall. The right type would be 54cm. The bike also has 27.2 x 300mm, alloy micro-adjust seat post.
The bike has SRAM PG-850 8-speed 12-26T cassette, 52/42/30 tooth chain and FSA tempo triple chainset. Other features are Shimano ST-2300 dual control STI, 24-speed shifters, Shimano Sora RD-3400 GS with 28.6mm alloy clamp rear mech and Shimano FD-2303 with 28.6mm alloy clamp front mech.
Satellite Sport 2012 Road Bike
The bike has a 27.2 x 300mm seat, Sport Road with satin silver rails saddle and 700 x 25c Vittoria Zaffiro tires (front and rear). The bike also has 14g stainless steel spokes, formula alloy hubs for front and rear hubs.
The Satellite Sport has Alex ID-19 double wall alloy black rims, amis embossed bar tape grips and Ritchey LB Aheadset, 1 1/8″ headset. Its stem is Road 3D forged alloy and Road 6061 alloy with anatomic bend handlebars. The levers are Shimano 2300 STI and have Tektro R317 long reach dual-pivot calipers with adjustable pads rear brakes.
The bike sizes Jamis stated here are only applicable for these models. If you are going to buy one, make sure to double check the product specifications. They may change any time, so get in touch with the seller or check the Internet.