2019 Yeti SB150 TURQ X01 Eagle Race

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2019 Yeti SB150 X01 with XMC (Orange)
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Yeti's Biggest 29er Yet: Meet the All-New SB150

Added progression in both the suspension department and on the geometry front make Yeti's new SB150 enduro bike built to charge. It features some clever engineering and ultra-clean lines. How does the latest Yeti ride? Dig in!

Rating: Vital Review

SB150 Highlights

  • 29-inch wheels
  • High-modulus carbon fiber frame and swing arm with C-Series and TURQ material options
  • 150mm (5.9-inches) rear travel // 170mm (6.7-inch) travel fork with shorter 44mm offset
  • Switch Infinity suspension system with two-piece wishbone-style shock extender
  • 230x60mm Metric shock
  • Compatible with both air and coil-sprung shocks
  • Tapered integrated headtube (41mm/52mm)
  • Custom downtube protector and chain guards
  • Internally molded carbon tubes inside of frame for improved cable routing
  • Integrated axle and derailleur hanger system
  • Boost hub spacing, front and rear
  • 29x2.5-inch tire clearance
  • Press fit 92 bottom bracket with ISCG05 mounts
  • 180mm direct rear brake mount
  • 34-tooth max chainring size
  • Clearance for standard-sized water bottle inside frame
  • Lab tested to Yeti's

SB150 Highlights

  • 29-inch wheels
  • High-modulus carbon fiber frame and swing arm with C-Series and TURQ material options
  • 150mm (5.9-inches) rear travel // 170mm (6.7-inch) travel fork with shorter 44mm offset
  • Switch Infinity suspension system with two-piece wishbone-style shock extender
  • 230x60mm Metric shock
  • Compatible with both air and coil-sprung shocks
  • Tapered integrated headtube (41mm/52mm)
  • Custom downtube protector and chain guards
  • Internally molded carbon tubes inside of frame for improved cable routing
  • Integrated axle and derailleur hanger system
  • Boost hub spacing, front and rear
  • 29x2.5-inch tire clearance
  • Press fit 92 bottom bracket with ISCG05 mounts
  • 180mm direct rear brake mount
  • 34-tooth max chainring size
  • Clearance for standard-sized water bottle inside frame
  • Lab tested to Yeti's more rigorous downhill standards
  • Lifetime warranty (new for all 2019 Yetis) and crash replacement program

"As we set out to create the new SB150, we had a number of objectives in mind. We wanted a slightly more progressive leverage curve, to fit a water bottle in the front triangle and lower standover height. All while maintaining our well­-known Yeti Switch Infinity efficient pedaling platform." - Yeti Cycles

All About The SB150

We sat down with Yeti's Director of Engineering, Peter "Stretch" Zawistowski, for an in-depth chat about the new bike, what sets it apart, Yeti's design goals, and how they pulled it all off with some clever engineering. Listen in for some great insight:

  • 0:43 - Geometry and fork offset
  • 2:08 - Progression and leverage curve
  • 3:55 - Shock damping tunes
  • 5:03 - Progression rate and shock selection
  • 5:49 - All about the shock extender
  • 8:07 - Making room for a water bottle
  • 8:41 - Anti-squat and pedaling performance
  • 11:20 - Internal tube-in-tube cable routing
  • 11:59 - Hardware for easy installation and maintenance
  • 12:38 - How does the SB150 ride compared to other Yetis?
  • 14:25 - Who is the SB150 for?

Peter with the shock extender, a key piece of the SB150 puzzle.

Geometry


The SB150 marks a major move toward more aggressive geometry for Yeti. The combination of a shorter 44mm offset fork, ultra-slack 64.5-degree head tube angle, lengthy reach measurements ranging from 430 to 505mm, and a steep 77-degree effective seat angle make for a ripper on the downs with the capability to pedal right back up.

We've been on the size medium with a 460mm reach.

Suspension Kinematics

Yeti's intention is "to use the travel and use it well." For years their bikes have averaged 3-8% progression. Following several tests and studies, Yeti left "with the understanding that more progression isn’t always better. The new Switch Infinity layout made infinite options available, and we chose 15% for the SB150 based on rider feedback. This new progression percentage also gives us a wider range of compatibility of shocks and a wider tuning window for rider weights and styles. This combination also improves small ­bump compliance and offers more support at the end stroke."

The increase in progression has also allowed Yeti to rely less on volume spacers and low-speed compression damping. The FOX Factory X2 shock uses a special tune with valving inspiration from the motocross world.

"We are aiming for a relatively flat and high anti-squat curve in the beginning and mid-section of travel where pedaling commonly occurs a.k.a. the pedaling zone. This creates an efficient pedaling platform through your entire pedaling zone, as opposed to one single point. After the pedaling zone, there is an inflection point where the Switch Infinity link begins to move down, dropping the anti-squat drastically. You’re typically not pedaling in this zone, so we want the chain forces to have less of an effect on the suspension performance since it’s an opposing force. Decoupling of the chain forces allows the suspension to work more efficiently to absorb impacts."

On The Trail

Like a good suspension design should achieve, you feel at one with the terrain on the SB150 yet not bothered by it. Whether pumping rollers or smashing through rocks, the suspension helps maintain speed and prevent you from getting jostled to bits. Unlike some Yetis in the past, this one doesn't feel overly damped. On the ups, the bike feels light and efficient while the rear end quietly goes to work, sucking up major imperfections in the trail and maintaining traction like a champ.

No matter if you're casually pedaling or mashing on the cranks, railing berms or bashing the rough bits, the bike maintains a very calm, quiet feel the entire time. It's this trait that makes it possible to find your personal flow state faster and really jive with the bike and terrain.

While short offset forks are now all the rage, few companies have achieved the same exceptional front-end feel that Transition has with their Speed Balanced Geometry concept. We feel like the SB150 is right there, though. This is a great example of what a shorter offset fork and a magical combination of geometry numbers can achieve. Front-end control is remarkable. We know exactly what it's up to at all times. It also rids the front end of some deflections through rocky sections, adds stability under heavy braking, and makes bumps feel more direct.

You know that feeling you get when you rail a berm perfectly? You'll be doing it more often on this bike. It's amazing how well it sets into, carries speed through, and exits many types of turns. The front end feel can be so secure and so confidence-inspiring that it truly is amazing what speeds you can unlock as you start to push your inside hand closer and closer to the ground. Once you adapt your riding position to get over the front end a bit more, the thing just hooks up and rails right around turns.

We find that it's easier to flick this bike around too, and more turns than normal end with an authoritative push into the pedals and the terrain. It's not often that we'll come into turns with the back end dancing about the opposite direction for a split second before slingshotting around, but on this bike it's a common occurrence – every time it happens we feel like cornering champs.

Richie Rude lays his zebra-painted SB150 over. We expect to see him rack up some great results aboard the new bike.

Looking at the bike from the top, down, the SB150 has an incredibly sleek, svelte look to it. It is visibly narrower than the Pivot Firebird 29, for example, by a pretty significant amount. If you grab the rear end and muscle it around, you're in for a surprise. The rear end of the SB150 is notably flexier than many of the long-travel 29ers on the market today. Does that compliance help or hurt though? In our opinion, unless you're a 250-pound berm slapper, it's absolutely worthwhile.

We really enjoy the calm, quiet nature that the SB150 brings to some of the chaos on the trail. It's a different ride experience, that's for sure, and one you'll have to adapt to over the course of a few rides. Once adjusted with your weight forward, it's game on!

When asked about the frame's lateral stiffness, Yeti's Director of Engineering responded: "Some interesting background regarding frame stiffness came from back when Grubby (Jared Graves) was on Yeti. In the old 303 DH days we were making some crazy stiff prototypes, and Grubby was always asking for more compliance. After many iterations of that frame and adjustments to the design we tuned out some of that rigidity. He felt he had more control and could hold a line better as a result. Over the years we quantified these stiffness values in terms of testing and have set these as a baseline. We then develop our layup to match. In short, we are not designing our layups to be as stiff as possible, we are aiming to meet the criteria noted above."

Do we feel like the lack of lateral stiffness compared to some of the competition is a compromise? It hasn't done our tester wrong at 175-pounds, 5'10" tall and a formerly slow-pro pace. Yes, you can feel a bit of mush when really pressing into a turn, but the bike doesn't load/unload in a way that seems detrimental. In fact, the lack of odd deflections thanks to compliance through the rough bits helps to further smooth the terrain, maintain line choice, and the bike is less likely to tire you out. We often expected to get a familiar kick at various points during our test rides, but it never seemed to happen.

Build Kits, Pricing & Availability

The initial SB150 release includes five complete bikes ranging from $5,199 to $10,399 USD including optional upgrades. The three highest-end bikes have the TURQ edition frame, which uses higher-quality carbon material and saves close to 250-grams (0.5-pounds) over the C-Series. Yeti says that both types of carbon achieve the same stiffness ratings.

View C-Series Builds | View TURQ Builds

  • C-Series GX Eagle - $5,199 USD
  • C-Series GX Comp Eagle - $6,199
  • TURQ X01 Eagle - $7,599
  • TURQ X01 Eagle Race - $8,599
  • TURQ XX1 Eagle - $9,499
  • TURQ Frame + Shock - $3,800

SB150 TURQ bikes and frames are available now. C-Series models will be available in one to two months.

The SB150 TURQ X01 Eagle Race build with upgraded carbon wheelset.

What's The Bottom Line?

We really enjoy the calm, quiet nature that the SB150 brings to some of the chaos on the trail. It's a different ride experience, that's for sure, and one you'll have to adapt to over the course of a few rides. Once adjusted with your weight forward, it's game on! Yeti has found a magic front-end feel that'll have you railing turns and mastering the steeps. That's coupled with a nice improvement to the rear suspension as well, providing a more fun, sensitive, bottomless ride that relies less on compression damping to get things done. We're just a month into testing, but there's no denying that we're loving the all-new SB150.

Visit www.yeticycles.com for more details.

Vital MTB First Ride Rating: 4.5 Stars - Outstanding


About The Tester

Brandon Turman - Age: 32 // Years Riding: 17 // Height: 5'10" (1.78m) // Weight: 175-pounds (79.4kg)

"I like to have fun, pop off the bonus lines on the sides of the trail, get aggressive when I feel in tune with a bike, and really mash on the pedals and open it up when pointed downhill." Formerly a mechanical engineer and Pro downhill racer, Brandon brings a unique perspective to the testing game as Vital MTB's resident product guy. He has on-trail familiarity with nearly every new innovation in our sport from the past several years and a really good feel for what’s what.

Photos by Brent Jacoby, Brandon Turman and Yeti Cycles

Specifications

Product Yeti SB150 TURQ X01 Eagle Race
Model Year 2019
Riding Type Enduro / All-Mountain
Rider Unisex
Sizes and Geometry
S, M, L, XL View Geometry
Size S M L XL
Top Tube Length 571.9mm 602.4mm 625.6mm 653.9mm
Head Tube Angle 64.5° 64.5° 64.5° 64.5°
Head Tube Length 95.0mm 96.6mm 107.7mm 118.8mm
Seat Tube Angle 77.0° 77.0° 76.9° 76.9°
Seat Tube Length 380mm 410mm 450mm 495mm
Bottom Bracket Height 347.8mm 347.8mm 347.9mm 347.9mm
Chainstay Length 433mm 433mm 433mm 433mm
Wheelbase 1192.5mm 1223.2mm 1248.0mm 1277.7mm
Standover 720.6mm 727.8mm 740.8mm 761.6mm
Reach 430.2mm 460.2mm 480.2mm 505.2mm
Stack 613.4mm 614.4mm 624.8mm 634.8mm
* Additional Info 44mm fork offset, 577.1mm fork axle to crown
Measurements with 170mm fork
Wheel Size 29"
Frame Material Carbon Fiber
Frame Material Details TURQ Series carbon fiber with internal cable routing and integrated rubber frame guards
Rear Travel 150mm
Rear Shock FOX Factory X2
Fork FOX Factory 36 GRIP2
Fork Travel 170mm
Head Tube Diameter Tapered
Headset Cane Creek 40, integrated
Handlebar Yeti Carbon, 35mm x 800mm
Stem Race Face Turbine R, 35mm x 40mm
Grips Ergon GE1
Brakes SRAM Code RSC with SRAM Centerline rotors, 200mm front / 180mm rear
Brake Levers SRAM Code RSC
Drivetrain 1x
Shifters SRAM X01 Eagle, 12-speed
Front Derailleur N/A
Rear Derailleur SRAM X01 Eagle, 12-speed
ISCG Tabs ISCG-05
Chainguide None included
Cranks SRAM X01 Eagle, carbon
Chainrings SRAM Eagle 30 tooth
Bottom Bracket SRAM DUB PF92
Pedals None included
Chain SRAM GX Eagle, 12-speed
Cassette SRAM 1295 Eagle, 12-speed 10-50 tooth
Rims DT Swiss XM 1501 Spline One aluminum wheels with 30mm inner rim width
Upgrade: DT Swiss XMC 1200 carbon wheels with 30mm inner rim width
Hubs DT Swiss XM 1501 Spline One aluminum wheels with 240 hubs, center-lock interface
Upgrade: DT Swiss XMC 1200 carbon wheels with 240 hubs, center-lock interface
Spokes DT Swiss XM 1501 Spline One aluminum wheels with DT Competition straightpull spokes, DT ProLock Squorx ProHead aluminum nipples
Upgrade: DT Swiss XMC 1200 carbon wheels with DT Aerolite straightpull bladed spokes, DT ProLock Squorx ProHead aluminum nipples
Tires Front: Maxxis Minion DHF 29" x 2.5"
Rear: Maxxis Aggressor 29" x 2.3"
Saddle WTB Custom Volt
Seatpost FOX Transfer
Seatpost Diameter 31.6mm
Seatpost Clamp Standard single bolt
Rear Dropout / Hub Dimensions Boost 148mm x 12mm
Max. Tire Size 29" x 2.5"
Bottle Cage Mounts One mount inside front triangle
Colors Orange or Turquoise
Warranty Lifetime
Weight 29 lb 14 oz (13,550 g)
Miscellaneous Switch Infinity with FOX bushing, seals, and Kashima stanchions
Sealed Enduro Max pivot bearings
Integrated derailleur hanger and axle
Price
  • $8,599
  • $9,499
More Info

www.yeticycles.com

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