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KHS 5500

KHS 5500
  • Color: Tan
Wheel Size:


Take your trail-taming abilities to the next level with the SixFifty 5500. It features a custom-formed aluminum frame with 150mm of plush rear suspension and a 150mm SR Aion fork with 35mm stanchions for responsive, predictable handling. Tubeless-ready WTB STB i35 rims paired with Kenda Regolith Pro tires combine trail-gripping traction with fast-rolling action, while the powerful Shimano hydraulic disc brakes offer precise speed control so you can rail it on the descents. An 11-speed drivetrain with Shimano SLX shifting employs a wide gear range in a compact package with tenacious chain retention so you don't have to worry about dropping a chain in the rough stuff, and a KS eTEN dropper post puts you in the best stance for speed with a quick flip of the handlebar-mounted lever.

Dropper posts

A dropper seatpost allows you to quickly lower and raise your seat to give you an ideal riding position. Dropping your seat creates a lower center of gravity for better control and maneuverability on steep descents, while raising it puts you at normal riding height for efficient pedaling.

Construction can include either hydraulic- or cable-actuated systems and the post’s travel can either be infinitely adjustable or stopped at set intervals, depending on the model.

Dropper seatposts come in standard lengths and diameters and vary by the amount of travel.


Frame FSS 29/650B+ 150mm, Alloy 6061 w/ Custom Formed Dbl. Butted TT & DT, 1.5 Taper, 12 x 148mm Rear Axle , w/ Replaceable Derailleur Hanger
Fork SR Aion 35 Boost, LOR Air, S: 27.5, M-XL: 29", 150mm, 35mm Stanchions, Alloy Steerer, Magnesium Lowers, Hydraulic Damp, External rebound, Lockout, 1.5 Taper, 15Q
Headset FSA Orbit 1.5E, Zero Stack, 1 1/8"-1.5
Rear Shock X-Fusion 02 Pro RL Trunion, Air, Ext Rebound, Lockout
Axles Front: 15x110mm
Rear: 12x148mm
Rims/Wheels WTB ST S: i35, M-XL: i29 TCS, Disc, Double Wall, 32H, Tubeless-Ready
Hubs Formula S/B Alloy Disc, 15mm, 110mm Boost, Formula S/B Alloy Disc, Cassette, 12 x 148mm Boost 120 TPI Folding, Tubeless-Ready
Spokes 14G Stainless Black w/ Alloy Nipples, 32 x 32
Tires Kenda Regolith Pro, S: 27.5 x 2.6, M-XL: 29 x 2.4 FT/2.2 RR 120 TPI Folding, Tubeless-Ready
Crankset SR Zeron, 2-pc, Boost, Zig Zag, S: 170, M-XL: 175
Chainrings 30T
Bottom Bracket SR Outboard Cartridge Bearing
Chain KMC X11-1 w/ MissingLink
Rear Derailleur Shimano SLX RD-M7000
Cassette/Rear Cogs Sun Race, 11-46T, 11-Speed
Shifters Shimano SLX, SL-M7000, 11s, Trigger, Right Only
Handlebars FSA Comet Low Riser, 31.8, 720x15mm M-L: 70mm, XL: 80mm
Tape/Grips Q2 Lock-on
Stem FSA V-Drive, 3D Forged, 4-bolt, 6 Degree, 31.8, S:60mm, M-L: 70mm, XL: 80mm
Brake Levers Shimano MT401 Wave 12
Brakes Shimano MT420 4-Piston Hydraulic Disc,180/160mm Rotors Wave 12
Saddle WTB Volt Sport
Seat Post KS Suspension Exa-Form KSP-900-i, Integra w/ Remote, Travel Adjust

* Subject to change without notice.

Part Numbers

Option UPC MPN
Tan / 16.5-inch / 29-inch 756928908002 901650001