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Yeti introduced the wonders of their Switch Infinity link to the mountain bike masses in 2014 with their well received 27.5” SB models. It was only a matter of time until it would make its appearance on the XC riding wheel size of choice. That time is now. Enter the Yeti SB4.5C; a 29er frame equipped with a Switch Infinity link that has been optimized for 4.5 inches of travel while, at the same time, delivering a solid pedaling platform. Out of the saddle pushes to the top are handled efficiently, while the descents, its all trail bike that’ll let your inner Yeti loose.
Creating a radically redesigned, completely new suspension platform was no easy task. For 4 years, Yeti worked side-by-side with the engineers at Fox Racing to develop the new Switch Infinity suspension system. Switch Infinity is a design before-unseen on mountain bikes. Functionally, the motion is similar to the older Switch design, but by moving away from a rotating eccentric pivot, Yeti could design a link that is an "infinite" length long, eliminating the feeling of the suspension bottoming out. Essentially, the rear suspension changes its wheel direction by translating vertical motion into horizontal motion on a pivot that suspends on two vertical, Kashima-coated stanchions, that Yeti calls a "rail". As the suspension compresses, the rear wheel moves upwards and outwards. The benefits are multi-fold.
Switch Infinity infuses the proven big-hit capabilities of their 303 Rail Technology with the pedaling efficiency of the previous Switch system to produce a smoother, lighter and stiffer rear end, whilst still possessing the climbing prowess and small bump compliance of the original Switch system. Switch Infinity now instead uses an all new, low-maintenance, Kashima-coated mechanism. No need to worry about air pressure or oil levels, the Switch Infinity system is virtually maintenance-free. Topping it all off, Switch Infinity is 100 grams lighter in weight than the previous Switch design.
|Frame||Yeti SB-45C, 4.5" (114mm) travel|
|Rear Shock||Fox FLOAT Factory DPS 7.5” X 2.0”|
|Headtube Diameter||Tapered inset (44mm/56mm)|
|Dropout Style||148mmx12mm (Boost)|
|Accessory Mounts||Bottle mount under downtube|
|Intended Use||XC, Trail|
|Weight|| 5.4 LBS
|A: Seat Tube Length||419 / 16.5||445 / 17.5||483 / 19.0||521 / 20.5|
|B: Effective Top Tube||579 / 22.8||605 / 23.8||630 / 24.8||655 / 25.8|
|C: Stack||608 / 23.9||613 / 24.1||622 / 24.5||636 / 25.0|
|D: Reach||397 / 15.6||421 / 16.6||444 / 17.5||465 / 18.3|
|E: BB Height||334 / 13.1||334 / 13.1||334 / 13.1||334 / 13.1|
|F: BB Drop||-||-||-||-|
|G: Head Tube Length||90 / 3.5||95 / 3.7||105 / 4.1||120 / 4.7|
|H: Head Tube Angle||67.4°||67.4°||67.4°||67.4°|
|I: Seat Tube Angle||73.3°||73.3°||73.3°||73.3°|
|J: Standover Height||751 / 29.6||751 / 29.6||751 / 29.6||751 / 29.6|
|K: Chainstay Length||437 / 17.2||437 / 17.2||437 / 17.2||437 / 17.2|
|L: Wheelbase||1127 / 44.4||1153 / 45.4||1180 / 46.5||1207 / 47.5|