The Zeb Ultimate is the top spec level of Rockshox's burliest mountain bike fork and is purpose made for our planets gnarliest features. Features a stiff 38mm chassis will not flex on challenging terrain, the new Charger3 damper, Buttercup vibration reduction technology, DebonAir+ air shaft, all-new ultimate bushings package and newly added pressure relief valves.

• 38mm chassis for increased stiffness and rider confidence
• NEW ButterCups block 20% of high frequency “trail chatter”. Limiting these vibrations massively reduces hand and arm fatigue leaving you feeling fresh with more control.
• NEW Charger 3™ features a completely new Internal Floating Piston (IFP) design with better fidelity, performance and truly independent adjustments without any ""cross talk"". Featuring High Speed Compression, Low Speed Compression, and a revamped Low Speed Rebound, every click is meaningful and exact. This dead silent design allows the rider to truly tune to perfection with every click
• NEW DebonAir+ is built to strike the perfect balance of what riders really want: butter-like small bump feel, increased air volume to add support throughout the travel and higher overall ride height for more confidence when things get steep.
• NEW Ultimate Bushing Package maximizes the fork’s bushing overlap, reducing friction and creating the smoothest ride possible
• NEW Pressure Relief Valves eliminate unwanted air pressure build up in the lower leg caused by variations in altitude or temperature. With the press of a button or two, Pressure Relief Valves restore premium fork feel.
• NEW Maxima Plush Dynamic Suspension Lube reduces friction and enhances fork performance ride after ride
• NEW Bolt-in torque cap adapters now included for the use with standard hub end caps
• Lightweight machined and anodized crown for premium looks and durability
• Signature Series graphics package
• RockShox premium short fender compatibility
• Ultra-low friction SKF wiper seals provide long lasting fork performance and improve overall suspension feel
• Maxima Plush damping fluid reduces friction and silences damper noise

SPECIFICATION - 

Wheel size: 27.5" and 29"
Damper Type: Charger 3 RC2 W/ButterCup
Fork offset: 44mm
Maxle included: Maxle Stealth
E-Bike Approved: E-bike Approved
Steerer: 1.5" Tapered
Axle: 15x110mm BOOST™
Axle to Crown (mm): 587 (27.5), 606 (29)
Brake type (FD): Disc
Crown Material: Forged, hollow aluminium
Lower leg type: Pressure Relief Valve
Upper Tube Finish: Fast Black
Upper tube type: 38mm aluminium
Damper adjust: Crown
Damping adjustments: Extl begin stroke rebnd, low speed comp, high speed comp
Volume reducer: 0/4 Tokens
Spring: DebonAir W/ButterCup
Max Tire Diameter (mm): 732 (27.5), 770 (29)
Max Tire Width (mm): 81
Maximum Rotor Size: 220mm
Minimum Rotor Size: 200mm
Fender Compatibility: Short, 3 point mount
Crown OD (mm): 59