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Yeti Cycles
SB150 Carbon Comp GX Eagle Mountain Bike

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SB150 Carbon Comp GX Eagle Complete Mountain Bike

As 29er trail and enduro bikes continue to move towards longer and slacker geometry, we've been wondering when Yeti would add some new long-travel wagon-wheelers to their coveted line of Super Bikes. After much anticipation, the SB150 Carbon Comp GX Eagle Complete Mountain Bike is finally here, with some significant updates compared to its predecessor the SB5.5. We noticed right away that the SB150 now has room for a water bottle in the front triangle rather than the mount on the underside of the down tube that subjected your bottle to mud, grime, and who knows what else. For those of us that ride without a pack and rely heavily on frame-mounted hydration, this is a huge plus. The next big change is the progressive enduro geometry with a head tube angle approaching downhill bike territory at 64.5-degrees, a longer wheelbase and reach paired with a short 44mm offset fork, and a steep 77-degree seat tube angle that moves the rider weight forward for more control over the front end and a better position for putting power down to the pedals while accelerating up a climb. The chainstays are shortened to a stubby 17 inches to enhance cornering and provide quick power transfers for getting up over obstacles. In addition to these geometry changes, the suspension kinematics have also been revised for slightly more progressivity, and there's an extra 10mm of travel front and rear. These changes add up to a bike that's incredibly stable on descents, absolutely smashing steep enduro stages and chunky high-speed terrain, all without losing the nimble handling and playful pop that make less technical trails fun to ride.


At this point, it's hard to question the benefits of 29in wheels when riders are winning Enduro World Series races and World Cup Downhills on them. Shortly after the SB150's release, Yeti pro Richie Rude piloted the SB150 to consecutive victories at EWS Ainsa and EWS Finale Ligure, solidifying the legitimacy of this new hard-hitter from Yeti and proving that the wagon wheels are here to stay. 29ers simply roll faster and don't get hung up as easily on obstacles, making them a stellar choice for covering ground quickly on rugged terrain. Of course, all of this was brought about by changes in modern geometry, boost spacing, better suspension, and refined frame materials—all things that Yeti took full advantage of with this new bike.


The unmistakable Yeti ride quality comes from their Switch Infinity suspension design. Honestly, Switch Infinity is some of the best we've ridden. It's plush throughout the 6 inches of rear travel, delivering a smooth ride quality that feels like you've got more travel than the numbers show, while maintaining impressive traction across chattery small bumps and square-edged hits alike. The key to its performance is the translating main pivot, aka the Switch Infinity link, which switches direction as the bike moves through its travel, providing excellent anti-squat characteristics for superior pedaling performance, and ideal suspension characteristics as it gets deeper into the travel. For the SB150, Yeti made the leverage ratio more progressive to provide greater compatibility with modern shocks and various rider weights and styles. The refined leverage ratio also gives the bike better small-bump compliance, quicker ramp-up in the midstroke for a more playful and supportive feel, and better bottom-out control while still allowing full travel usage. The SB150 is also the first to employ the patent-pending wishbone shock extender, which maximizes standover height and allows Yeti to fit a water bottle inside the front triangle, all while maintaining compatibility with a coil shock.


On paper, the long, low, and slack geometry with plenty of suspension travel make the SB150 look like a wicked descender, and that it is. By using a 44mm shorter offset fork, Yeti was able to seriously slacken the real head angle for better stability on descents and high speeds, all while maintaining excellent steering precision as the shorter fork offset keeps the wheelbase length in check. The longer reach, steeper seat tube angle, and short chainstays help move the rider forward on the bike, keeping weight on the front wheel for better traction on steep chutes and chunky downhills. Paired with a metric Float DPX2 rear shock and a Fox 36 fork, this bike absolutely rips on the descents.


These geometry benefits are not one-sided though, as the steeper seat angle, short-offset fork, and forward riding position help keep power to the pedals and the steering quick and nimble when climbing. Frankly, we were quite surprised with how well this bike goes uphill in spite of its enduro-focused geometry, clamoring up the loosest, steepest, and most ledgy terrain we could find with relative ease, enough to convince us the SB150 is worthy of being a one-bike quiver.


The frame is constructed from Yeti's C-Series carbon fiber, which offers a fine balance of strength, stiffness, and compliance with a modest 250g weight penalty compared to the TURQ carbon frames. Yeti uses a modified layup schedule that helps keep the cost of the frame down without sacrificing quality. They were also able to incorporate full-length tunnels for the cable routing, giving you a rattle-free ride and simplifying maintenance since it's so easy to feed your cables through the frame. The frame is tested to DH standards, well beyond what most others do for a 150mm trail bike. It has to be strong enough for a bruiser like Richie Rude, who makes the earth shudder underneath him while riding, so it's certainly tough enough for the rest of us. Yeti is confident enough in their carbon that they are now offering a lifetime warranty on the frame, just for good measure. Also, it's worth noting that the rear triangle has clearance for up to 2.5in rubber, letting you run high-volume rear tires if desired.


Details

  • Yeti's 29er enduro bike for blasting down technical trails
  • 29in wheels cover ground quickly and roll smoothly over obstacles
  • 6in of Switch Infinity travel for a plush ride & efficient pedaling
  • Carbon frame is tested to DH standards for strength & durability
  • Longer, lower, slacker geometry is impressively stable on descents
  • Short-offset fork balances slack geometry with precise steering
  • Steep seat tube angle puts you in a better climbing position
  • Shock extender allows room for water bottle in the front triangle
  • Item #YTI00DO
Frame Material
C-Series carbon fiber
Suspension
Switch Infinity
Rear Shock
Fox Performance DPX2
Rear Travel
150mm
Fork
Fox Performance 36
Front Travel
170mm
Headset
Cane Creek 40 IS
Shifters
SRAM GX Eagle
Front Derailleur
n/a
Rear Derailleur
SRAM XO1 Eagle
ISCG Tabs
ISCG-05
Crankset
SRAM X1 Carbon Eagle DUB
Chainring Sizes
30t
Bottom Bracket
SRAM DUB
Bottom Bracket Type
PF92
Cassette
SRAM 1275 Eagle
Cassette Range
10 - 50t
Chain
SRAM GX Eagle
Brakeset
Shimano XT 2-piston
Brake Type
hydraulic disc
Rotors
Shimano [front] 203mm, [rear] 180mm
Handlebar
Race Face Aeffect R 35
Handlebar Rise
20mm
Handlebar Sweep
[backsweep] 9-degree, [upsweep] 5-degree
Handlebar Width
780mm
Grips
Ergon GE1
Stem
Race Face Aeffect R 35
Stem Length
40mm
Saddle
WTB Custom Volt
Seatpost
Fox Transfer dropper
Seat Collar
36.4mm
Wheelset
DT Swiss M1700 30mm
Front Axle
15 x 110mm Boost
Rear Axle
12 x 148mm Boost
Tires
[front] Maxxis Minion DHF, [rear] Maxxis Aggressor
Tire Size
[front] 29 x 2.5in, [rear] 29 x 2.3in
Pedals
not included
Claimed Weight
30 lb 4.8 oz
Recommended Use
enduro
Manufacturer Warranty
lifetime on frame

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