Yeti SB4.5c X01 Full Suspension MTB - Grey

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RRP $8,745.80
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It was only a matter of time before Yeti rolled out their Switch Technology in big wheels. The SB4.5c is optimised for 29" wheels and has a different personality than their other bikes. The pedalling platform is a little stiffer, so out of the saddle climbs feel effortless. Descending, it’s all trail bike — open it up and let the big wheels roll.



Switch Infinity utilises a patented translating pivot that switches direction as the bike moves through its travel. This provides excellent anti-squat characteristics for superior pedalling performance and ideal suspension characteristics as it gets deeper into the travel.

Click here to learn more about Switch Infinity.


Please note: Image used for illustration purposes only. See details for correct specification.



  • Switch infinity technology patented suspension system
  • High modulus carbon fibre main frame and swing arm
  • Collet axle system on pivots reduces bearing wear
  • Tapered inset headtube (44mm/56mm)
  • Custom debris and chain guards
  • Internal cable routing
  • Integrated axle and derailleur hanger system



  • Fox Float 34 Factory 140mm fork
  • SRAM X01 11 speed derailleur and shifter
  • DT SWISS 350 W/XM401 wheels
  • SRAM Guide RSC brakes
  • Easton Haven Carbon 740mm bars
  • Easton Haven 55mm stem

More information is available in the details tab.
More Information
Model Number YETISB45CX01GRY
Brand Yeti
Colour Grey
Gender Mens
Age Adult
Model Year 2016
Frame High modulus carbon fibre
Fork Fox 34 Factory 140mm Boost
Rear Shock Fox Float Factory DPS
Shifters SRAM X01 1X11 (right hand only)
Derailleur (Rear) SRAM X01 1X11
Brakes SRAM Guide RSC
Crankset Race Face Turbine 30t
Cassette SRAM 1180 / 10-42T
Chain SRAM 1130 / 11 Spd
Bottom Bracket Race Face BB92
Hub Front DT Swiss 350
Hub Rear DT Swiss 350
Rims DT Swiss XM401
Tyres Front Tyre: Maxxis Ardent 2.4 / Tubeless | Rear Tires: Maxxis Ikon 2.2 / Tubeless
Handlebar Easton Haven Carbon 740mm
Stem Easton Haven 55mm
Headset Cane Creek 40 44X56MM Internal
Saddle Yeti / WTB Custom
Seatpost SRAM Reverb
Pedal None incl.
Wheel Size 27.5inch
Number of Gears 11
Approximate Weight 25.9lbs / 11.75kg
Ready to ride
Every bike from Start Fitness is fully checked & assembled before despatch and will arrive, almost, ready to ride. Each bike is assembled by one of our CyTech accredited mechanics and then packed into one of our custom boxes. Minimal assembly, with basic tools, is required before you can ride. Assembly tools are not usually included. More details can be found here.
Please note: Some bikes are not supplied with pedals. Manufacturers don’t know if you want flat or clipless pedals, rather than send the bike with the wrong type, they leave the choice for you to make.
This process has a lead time of between 7-10 working days
Unfortunately during peak times this may be slightly delayed. We will however, aim to despatch your bike as quickly as possible.
Making sure you are home
Once fully checked and boxed, we will contact you to book a delivery date. Our bikes are despatched on a next working day service (excludes weekends & bank holidays) for UK mainland orders, or a two day service to Northern Ireland and outlying Scottish areas. European bike deliveries usually take approximately one week.
Taking Delivery
Any mechanical or cosmetic issues need to be reported to us within one week of the delivery date. If you do not plan on using the bike straight away, we advise that you remove it from the box and check it over ASAP as we cannot be responsible for any reported issues (other than standard warranty issues) later than one week from the date that the bicycle was delivered.
First Check-Over
After a few weeks of riding (depending on riding style and conditions), a new bike will need a check-over to make final adjustments and to re-check all nuts and bolts. This is necessary as the bike goes through a ‘bedding in’ phase after which, final adjustment may be necessary. We recommend that this is carried out by a CyTech qualified mechanic. It is important to have these checks carried out to prevent any avoidable problems which may not be covered by warranty and to ensure the smooth running of the bicycle.
We can carry out the first check-over free of charge, at our Newcastle store (NE16JE). If you’ve had the bike delivered, it will be your responsibility to get the bicycle to and from our store for this work to be carried out. This complimentary check-over does not include any labour to replace worn parts or to fit new accessories.
All bikes must be booked in for the first service & must be clean or a £15 cleaning charge will be payable. You can book this by calling 0191 261 4191. Proof of purchase will need to be presented when the bicycle is dropped off for the first check-over.
Bike Servicing
Bicycles need to be serviced regularly, as a guideline we would advise on at least one full service per year and/or a standard service twice a year. If the bike is used regularly in adverse conditions, more regular servicing may be required.
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