The past two years has seen Yeti steadily expand its Sixfinity suspension platform to more models. We figured this new era of bikes was worthy of discussion, so we’ve created this forum for riders to compile questions, get answers, provide setup tips, and resolve issues.
Below is an overview of the Sixfinity design, plus details, assets, and Vital's coverage of each bike.
Sixfinity Explained
Yeti debuted Sixfinity back in 2021 with their first-ever e-bike, the 160e. However, development began as far back as 2016, with 27.5-inch alloy mules built around the SB66 and SB95. These proof-of-concept bikes led Yeti to cut proto carbon molds in 2019 to begin testing frame stiffness and strength.
The move from Switch Infinity to Sixfinity was driven by the ability to package the linkage around e-bike motors, reduced maintenance/complexity, and heightened control of the kinematics. As the name suggests, Sixfinity is a six-bar linkage layout that allows for independent tuning of anti-squat, anti-rise, and leverage rate.
It features a lower ‘Switch Link’ that changes directions as the bike moves through its travel. It first moves up, and anti-squat remains high to deliver a solid pedaling platform. Then it reaches an inflection point and begins to move down, and anti-squat drops off to keep the suspension active deeper in the travel.
Yeti has worked to tailor the acceleration and deceleration characteristics of each bike’s kinematics to match how they’re ridden. The e-bike models have lower anti-squat values to maintain traction when climbing with e-assistance, and higher anti-rise values to help minimize forward pitch under braking. The analog models have higher anti-squat values to improve pedaling efficiency and lower anti-rise values to balance geometry preservation with suspension movement under braking.
Sixfinity also allows for unique kinematic tuning for each frame size, and the triangular design evenly distributes loads across bearings for better durability, making for a more torsionally stiff frame.
Each model features flip chips at the lower shock mount to adjust the leverage rate progression. The shape of the leverage curve is linear on all bikes to provide predictable performance. It also makes it easier for Yeti to tune shocks since the leverage rate is consistent throughout travel.
MT Overview
Landing in the 'ride-everything' trail category, the MT is a 140mm travel trail bike that spreads its abilities wide. Unlike the other Sixfinity bikes, the MT only accommodates a 29-inch rear wheel. It builds on Yeti’s best-selling SB130 and SB140 models, but receives a slightly more aggressive geometry package to up its stability descending.
Highlights
- 140mm rear wheel travel // 160mm fork
- 29-inch wheels only
- High-end TURQ series carbon frame only
- Adjustable leverage rate progression: 10%, 15%, 20%
- No geometry adjustments
- In-frame downtube storage
- Secret AirTag holder in two-layer downtube protector
- 64.5-degree head tube angle
- 180mm rear rotor size (220mm max)
- 185x55mm Trunnion shock
- 30% recommended sag (16.5mm)
- Sizes: S, M, L, XL // Accommodates rider heights: 5' 1"-6' 7" (155-201cm)
- Build kits: XO/90 - $8,000 // XT Di2 - $8,500 // XO - $9,800 // XX - $11,500
- Weight (L, XO Build, no pedals): 34.14 lb (15.4 kg)
- Shock Setup
- View key specs, compare bikes, and review the new Yeti MT in the Vital MTB Product section.
LT Overview
The LT was the first non-e-bike to rock Sixfinity. It was also the first Yeti with in-frame storage and a chainstay length adjustment. A true enduro race bike with an affinity for balanced stability in the most critical moments, its low-ish weight and climbing efficiency make it just as enjoyable to grind uphill on.
Highlights
- 160mm of rear wheel travel // 170mm fork (compatible with up to 180mm single or dual crown forks)
- 29-inch wheels // Mixed wheel capable
- MX wheel, standard and low/slack geometry options
- TURQ carbon front and rear triangles with alloy linkage and dropouts
- Two chainstay lengths (stock and +10mm dropouts)
- Adjustable leverage rate: 15%, 20%, 25%
- Integrated frame storage with storage frame bag
- 64° head tube angle
- 200mm rear rotor size (220mm max)
- 185x55mm Trunnion shock
- 30% recommended sag (19.5mm)
- 55mm Boost chainline
- 31.6mm seat post // 36.4mm seat collar
- Sizes: S, M, L, XL
- Weight (size M, no pedals or bottle): 35.74 lb (16.21 kg)
- MSRP (USD): LT XO - $10,200 (tested) // LT XT Di2 - $8,900 USD // LT XO/90 - $8,400 USD
Read our review HERE
View key specs, compare bikes, and review the new Yeti LT in the Vital MTB Product section.
MTe Overview
The LTe came out mid-2025 and was Yeti's first lightweight, mid-power e-bike. Powered by TQ HPR 60 motor and a 580 Wh battery, its manageable weight (45 lb | 20.4 kg) and aggressive trail geometry position it as a epic ride-everything weapon with enough e-assitance to take the edge off climbs, or tackle big adventures.
Highlights
- 145mm rear wheel travel // 160mm fork (compatible with up to 180mm forks)
- 29-inch wheels stock // Mixed wheel capable
- TQ HPR60 motor with 60 Nm of torque and 350 W peak power
- 290Wh or 580Wh integrated removable battery options
- Adjustable leverage rate progression: 12%, 14%, 23%, 25%
- 64-degree head tube angle
- 180mm rear rotor size (220mm max)
- 185x55mm Trunnion shock
- 30% recommended sag (16.5mm)
- 55mm Boost chainline
- 31.6mm seat post // 36.4mm seat collar
- Sizes: S, M, L, XL // Accommodates rider heights: 5' 1"-6' 7" (155-201cm)
- Weight: 51.43 - 51.72 lb (23.3 - 23.5 kg)
- Build kits: C2 90 - $9,850 // T3 X0 - $12,650 // T4 XX - $14,300
- Weight (M, T3 Build, 580Wh battery, no pedals): 45 lbs (20.4 kgs)
- Shock Setup
- MTe Owners Manual
- Read our full review HERE
- View key specs, compare e-bikes, and review all the new Yeti MTe models in the Vital MTB Product Guide.
LTe Overview
The LTe is Yeti's longest travel, full-power e-bike that replaced their inaugural 160e model in 2025. It's an enduro race bike designed for hard charging, and is powered by Bosch's Performance Line CX or CX Race motor paired with a 800 Wh battery.
Highlights
- 160mm of rear wheel travel // 170mm fork (compatible up 190mm)
- 29-inch wheels stock // Mixed wheel capable
- 120 Nm Bosch CX motor with 750W peak power (X0 & XX models use CX Race motor)
- 800 Wh battery (600 Wh compatible // 250 Wh range extender available aftermarket)
- Adjustable leverage rate progression: 25%, 30%, 35%
- 64-degree head tube angle
- 180mm rear rotor size (220mm max)
- 205x65mm Trunnion shock
- 30% recommended sag (19.5mm)
- 55mm Boost chainline
- 31.6mm seat post // 36.4mm seat collar
- Sizes: S, M, L, XL // Accommodates rider heights: 5' 1"-6' 7" (155-201cm)
- Weight: 51.43 - 51.72 lb (23.3 - 23.5 kg)
- Build kits: 90 - $10,900 // X0 - $13,500 // XX - $15,500
- Shock Setup
- LTe Owners Manual
Read our full 'First Ride' review HERE
View key specs, compare e-bikes, and review the new Yeti LTe in the Vital MTB Product section.
Let us know your thoughts on Yeti's Sixfinity design! Feel free to ask questions or provide answers, and we'll do our best to get answers from Yeti when possible.
The MT looks really good.
Had high hopes MT will have adjustable chainstays. Lucky me i just saved 5k on a frame lol.
Great to see they finally got rid of the Switch Infinity BS. It was utter rubbish in the UK mud.
I know this is a setup discussion thread, but did want to chime in on something I find interesting. It seems like everyone of the press release images has like 25mm or more of headset spacers under the stem. If that is how you want to present the bike, and hint that it's where the bars should be, then maybe just add +10 or so to your stack height. I get that people look at reach and ignore stack, but lets be honest. a 480 bike with 25mm of spacers is a very similar if not identical to a 470ish bike with 5mm under the stem.
Let's stop fixing fit with steer tube lengths.
Make Stack Great Again.
The SixFinity mules from 2016 and 2019 are super cool to see. That's a looooooong time ago, and I didn't realize they've been kicking this idea around for that long.
Last spring I hopped on an MTe mule. For me and how I ride these days it was spot on. The power feels more natural than other e-bikes. Felt like I had power for days rather than riding something that felt like it had a throttle. The reduced weight kept it feeling like an analog bike when descending or maneuvering on trail. The rear end tracks crazy well. Mid way through the first test ride I knew I was getting one. I got mine last summer and it has been an awesome bike for me. I ride it more than all my other bikes combined.
I am very tempted by the new analog LT/MT to get something to compliment my MTe.
If we are talking Sixfinity questions... is the DH bike going to come to production?
Did Yeti provide any user setup guidance in relation to the 3 leverage rates? It's great to have options, but I think a "Start here, if you ride this type of terrain, try this.." would be helpful. Having spent ample time on the MTe, and still loving it, I found my favorite setting, but it's not necesarily straight forward.
I'm curious how similar the MT's suspension feels to the MTe — especially with the MTe's ability to feel like the rear is 160mm when you need it —with it weighing ~10 pounds less. Curious to hear more!
Would be interesting and bet it would be pretty informative to a lot of people if someone made a chart of stack, head angle, and how much spacers change reach numbers.
Losing 1cm of reach with 20mm of spacers would assume a 45° HTA?
**Spacer Reach & Stack Calculation (64.5° Head Angle, 20mm Spacers)**
* **Reach Reduction (Horizontal shift closer to rider):**
20 mm × cos(64.5°) = 20 × 0.4305 = 8.61 mm reduction in reach
* **Stack Increase (Vertical shift higher up):**
20 mm × sin(64.5°) = 20 × 0.9026 = 18.05 mm increase in stack
Next time i ask ai to answer me a geometry problem I’m gonna ask it to show me the math.
I was a bit shocked when they had the DH prototype in carbon for their race team without any aluminum mules but clearly they did a good job of keeping things under wraps. That product development cycle is crazy long though, just looking back the SB 5.5 came out in 2016 when 29er trail bikes and 1x12 drivetrains were a new thing with a 66.5 HTA and a 442 reach for a size large.
Edit: I guess 1x12 existed in 2016
Post a reply to: Yeti Sixfinity Bikes - MT, LT, MTe, LTe Models - Impressions, Setup Help, Discussion