Yeti SB165 C2 Bike w/Fox Factory Suspension

The Yeti SB165 C2 Bike w/Fox Factory Suspension is Yeti's purpose-built coil enduro platform — 165mm of Switch Infinity travel tuned from the ground up for coil spring dynamics, built to handle full-send park laps and multi-hour backcountry missions without compromise. Framed in C-Series carbon with Fox Factory suspension front and rear and a mullet 29/27.5 wheel setup, the SB165 occupies a specific position in the enduro category: genuine big-mountain capability that doesn't require you to sacrifice the entire climb to earn it.

The frame is built around Yeti's Switch Infinity suspension — a translating-pivot design now in its latest generation with custom coil kinematics engineered specifically for a coil shock. The leverage curve delivers 22% progressivity, with a refined mid-stroke profile that keeps the suspension active through sustained compressions and loaded turns while providing proper bottom-out support when the trail escalates. Yeti tightened the Switch Case structure around the linkage to increase chassis stiffness, gain ground clearance, and create more room for hydration — none of which came at the cost of suspension feel. A patented two-piece wishbone repositions the Fox DHX2 coil shock forward in the frame, widening shock compatibility options, lowering standover height, and making shock removal quick and straightforward. Each size of the SB165 uses its own distinct carbon layup to ensure consistent torsional stiffness across the size run — a deliberate design choice to prevent suspension binding and preserve small-bump sensitivity regardless of which size a rider is on. Threaded 73mm BSA bottom bracket with integrated ISCG-05 chain guide tabs and internally routed cables complete a frame designed to take genuine punishment without complicating routine service.

Fox Factory suspension handles both ends. A Factory 38 fork with 170mm of travel anchors the front, and a Factory DHX2 coil shock manages the 165mm rear — a full Factory spec that's matched to the SB165's kinematics rather than assembled from a parts bin. SRAM GX Eagle runs the drivetrain with a 30T chainring paired to a 10-52T cassette, wide enough to make climbing gears usable on long approaches without adding the cost or complexity of electronic shifting. SRAM Code R four-piston brakes with 220mm front and 200mm rear Centerline rotors deliver stopping power sized for the terrain this bike is built to ride. The wheel configuration makes the SB165's intentions clear: a Maxxis Assegai 29x2.5" front tire for rollover speed and edge grip in aggressive conditions, paired with a Maxxis Minion DHR II 27.5x2.4" rear for rear-end maneuverability in tight, technical sections. DT Swiss E1900 30mm rims carry both. Dropper post travel scales with frame size — 150mm on Small, 180mm on Medium, 210mm on Large and XL — via a OneUp Components post, keeping saddle management proportional across the size run. A Burgtec Enduro MK3 stem and Ride Wide Alloy 35mm bar complete a cockpit built around control on steep, demanding lines.

Design Benefits

1. Switch Infinity coil kinematics — translating-pivot suspension with 22% progressivity, tuned specifically for a coil shock to deliver terrain-eating small-bump sensitivity and reliable bottom-out support on the most demanding hits
2. Size-specific carbon layup — each frame size has its own carbon schedule for consistent torsional stiffness across the size run, preventing binding and preserving suspension performance for every rider regardless of frame size
3. Mullet wheel setup — 29" front for rollover speed and traction, 27.5" rear for rear-end agility; size-specific chainstay lengths (433–439mm) keep handling balanced as frame size scales up
4. Fox Factory 38 + DHX2 — full Factory-level suspension front and rear, with a coil rear shock that amplifies the SB165's suspension sensitivity rather than working against it
5. Patented wishbone shock mount — two-piece wishbone positions the DHX2 forward in the frame for greater shock compatibility, lower standover height, and straightforward shock removal
6. Threaded BB + ISCG-05 — aluminum threaded shell resists creaking and simplifies service; integrated ISCG-05 tabs provide a solid mounting point for chain guide use on demanding terrain

Final Take

The SB165 C2 is a coil-sprung enduro platform with a clear design priority: descend as hard as possible, then actually pedal back. Fox Factory suspension front and rear, Switch Infinity coil kinematics, and a mullet wheel setup put it in genuine big-mountain territory at a price point that makes the platform accessible. For riders who spend their weekends on the kind of terrain that punishes under-biked decisions, the SB165 C2 is the answer.