Twenty Nine Inches presents the SRAM press release for the RS-1 and new wheels in its entirety. Thanks to SRAM/Rock Shox for the info and images.


panel 1 comboFrom the SRAM press release:

We set out to make the world’s most efficient XC racing suspension. We ended up with an entirely new world of racing.

When it came time to best our XC platform, it meant reevaluating every element that defines the most winning XC fork in world cup history. A ruthless approach to material optimization, an ultra efficient energy saving lockout and quite possibly the world’s lightest air spring – all designed to enable riders to find their next line. The outcome was something unexpected. A fork that ushers in a new-generation philosophy to XC rider efficiency, packaged in a chassis design never before seen by RockShox. RS-1 harnesses 25 years of creativity, refinement, and the courage to tackle the biggest engineering challenge of mountain bike suspension to date: the inverted chassis.

Wheel Size 29”
Travel (mm) 80/100/120mm
Stanchions 32mm aluminum, Fast Black
Steerer Tapered Carbon
Offset 46 and 51mm
Axle Predictive Steering – Torque Tube w/Maxle Ultimate
Damper Accelerator
Damper Adjust XLoc Remote (Sprint or Full Sprint)
Spring Solo Air
Colors  Black, Diffusion Black
Decal Color Red/White, Silver
Weight  1,666g (3.67lbs)
MSRP $1,865 / € 1,658


Engineering the RS-1 enabled us to use a fully integrated approach, avoiding the need for unwanted material in the chassis. We completely reimagined the fork’s structure, blending the legs, crown and steerer tube in a carbon mainframe resulting in an unprecedented level of integration and material optimization. The fully integrated RS-1 carbon mainframe improves steering precision and stiffness – every single gram serving its intended purpose, and nothing more.

PREDICTIVE STEERING:  The missing link. 

For decades, engineers wanting to reap the benefits of inverted designs had to choose between light and flexy, or torsionally stiff and heavy. A dilemma that hindered the performance gains of inverted forks from being fully realized. Now we can’t claim to have invented the inverted suspension chassis. But we can claim to be the first company to deliver a design that’s light enough for the World Cup, while simultaneously delivering a stiffer chassis than traditional forks. The break-through technology centers around a reimagined dropout/wheel interface. Predictive Steering features a stock 15mm Maxle Ultimate mated with a solid oversized axle running through the hub, the Torque Tube. When the system is clamped with the corresponding dropout, the Torque Tube axle becomes a structural part of the fork, providing unparalleled stiffness. Fork leg twisting is minimized. And, since Predictive Steering technology only adds material around the dropouts and on the hub’s axle, the weight difference compared to a standard 15mm through axle setup is minimal, while providing an unprecedented level of torsional stiffness for a lightweight, inverted fork. This technology gives even the best riders room to find a new line. And it’s only available on RS-1.


  • RISE 60 – 29”
  • ROAM 50 – 29”
  • Predictive Steering Hub

rock shox RS-1rock shox RS-1

Conquer the small battles, win the war.

On the journey to find higher levels of rider efficiency, we observed that many XC racers tune their suspension to the hardest possible compression setting, looking for maximum pedaling efficiency under power. This leaves them having no choice but to endure the natural undulations and braking bumps found on every square inch of the trail. But this approach transfers speed killing, energy robbing vibration to the rider. Nothing solves the issue more efficiently than RS-1: the nature of the inverted design ensures the seals are constantly bathed in oil and minimizes binding between stanchions and bushings. The result is an unprecedented amount of small bump sensitivity, helping you stay more efficient everywhere on the trail and racetrack.

A Damper Designed For Acceleration

Contrary to popular belief, rewriting the rulebook isn’t all upside. After designing the fork chassis from the ground up, it meant developing an all-new damper to eek every percent of performance out of the RS-1. A tall order, but one that RockShox fully embraced.

We started by reevaluating how XC athletes produce efficient power and navigate course conditions while fatigued. We created a firmer lockout for moments of maximum sprint efficiency. We eliminated material redundancies by housing the circuit in a sealed cartridge, reducing weight. Then air was eliminated from the damper circuit ensuring absolute consistency. The Dig Valve’s compression tune was created to manage diving during successive hits and heavy braking. We added the Rapid Recovery system to keep the fork riding high, in the plushest part of the travel. We even made the cartridge easily serviceable in the race pits or at your local shop. We believe the Accelerator Damper crystallizes the performance of RS-1 by helping riders turn every pedal stroke into acceleration towards the top step of the podium.

RockShox Bottomless Tokens:  that bottomless feeling

  • Easily tune your air volume in RS-1, Reba, SID, and Revelation
  • Tokens thread in to topcaps just like they do in PIKE
  • Black tokens designed to work in 32mm upper tubes

rock shox RS-1rock shox RS-1 tokensrock shox RS-1 


Available: June, 2014


wheels cut panel combo


You don’t win by being the lightest. Or the stiffest. Or the toughest. You win by being the fastest. And that takes a wheel designed specifically for the modern mountain biker. At SRAM, we start with the demands of the terrain and work forward from there—carefully balancing each wheel’s design around five key attributes: weight, inertia, engagement, stiffness and durability. No matter where you ride, SRAM wheels will take you further. RISE higher. ROAM farther. RAIL harder.


In RISE, we’ve engineered the perfect balance of weight, inertia, engagement and stiffness to give you the right ride for XC and beyond—the right feel and the right results. Quicker bursts, tighter turns, better rolling and easier climbs. Softer landings and smoother descents. Bigger wins. Louder cheers. Every wheel connects you to the ground. Only a few can carry you to new heights.


SRAM_MTB_RISE_XX_Fr#4985D21To achieve perfect balance. To remove limitations. To take every race to new heights. RISE XX — the XC racing wheel for riders who never compromise. Ultra-light, tubular, 29” CARBON TUNED rims. DOUBLE TIME hubs with SPEEDBALL Ceramic bearings. Every detail designed to deliver the competitive edge that every racer seeks. Also available with SRAM’s revolutionary PREDICTIVE STEERING Technology for unmatched balance, stiffness and stability when matched with the RockShox RS-1 fork. RISE XX. RACE FORWARD. RISE HIGHER.

Available: MAY, 2014


  • Intended use: XC
  • Available in 29” only
  • CARBON TUNED rim for tubular tires
  • Butted stainless spokes for stiff responsiveness
  • New DOUBLE TIME ratchet mechanism for durable, quick engagement
  • SPEEDBALL CERAMIC precision bearings for light, extremely smooth action
  • Convertible to different axle types
  • Available in XD or 10-sp driver body
  • Weight: 1285g (wheel pair in lightest configuration)




double timeDOUBLE TIME™

Ratcheting up the smarts. This straight-aligned, 4-pawl design turns the 26-tooth ratchet ring into 52 points of contact. The result: smooth 6.9-degree engagement without reducing tooth size or offsetting internal geometry—which means serious long-term durability.

Speedball™ Ceramic

The only adjustment they’ll ever need was made back at the factory. Every part of the ball bearing comes from the exact same supplier—which means that each bearing bore can be precision machined to fit the bearing race exactly. With tolerances this tight, the days of adjusting play after every ride are over. Now SPEEDBALL bearings are available with ceramic balls for faster, smoother and longer lasting bearings.


Strong like bull, light like carbon. Every CARBON TUNED rim is designed with a distinct style of riding in mind. By selectively layering woven carbon fiber at high-stress points and using unidirectional fiber throughout, SRAM creates rims that yield unprecedented low weight to create responsiveness, while maintaining strength and durability.


XD is a cassette driver body design that allows the use of a 10-tooth small cog and provides an improved interface with the cassette.


Switching axles has never been easier. Threadless side caps can be installed and replaced by hand—no tools necessary. SIDE SWAP SYMMETRICAL side caps refuse to take sides. The left side cap is identical to the right one. No need to figure out where each cap is going.

Predictive Steering

spark geoErase uncertainty with PREDICTIVE STEERING, SRAM’s new XC hub technology engineered for unprecedented stiffness and precision. Predictive Steering grew out of a frustration that every XC rider knows: subtle give-and-take at the fork-hub interface can lead to massive frustrations on the trail. So the SRAM engineers went to work with one word in mind: stiffness. And they designed a system that delivers, but remains one of the lightest around.

Unique fork, axle and compression technologies combine at the core of Predictive Steering. The inverted fork features lower legs that soak the seals in a constant oil bath for optimal bump performance. The fork never shifts thanks to the large-diameter TORQUE TUBE axle that creates an unbreakable bond, locking the lowers in place and maximizing torsional stiffness. The new Maxle Ultimate completes the connection with a tighter, stronger clamping force than you’d expect with a quick release compression system. Compatible with the SRAM PREDICTIVE STEERING hub and the RISE XX, RISE 60 and ROAM 50 wheels, Predictive Steering is the integrated system that lets you become one with your bike.


  • RISE 60 – 29”
  • ROAM 50 – 29”
  • Predictive Steering Hub

New SRAM Predictive Steering Hub


SRAM’s new XC hub is engineered for unprecedented stiffness and precision. Unique fork, axle and compression technologies combine at the core of Predictive Steering. The RS-1 fork never shifts thanks to the large-diameter TORQUE TUBE axle that creates an unbreakable bond, locking the lowers in place and maximizing torsional stiffness. The new Maxle Ultimate completes the connection with a tighter, stronger clamping force than you’d expect from a quick release compression system.

The SRAM PREDICTIVE STEERING Hub proves that being solid doesn’t mean being sluggish. Super-precise SPEEDBALL™ bearings mean lower resistance, faster revolutions and no more time spent readjusting play.


  • Dedicated hub interface for the inverted RS-1 fork – creates an unparalleled bond between fork and hub
  • Torque Tube is an oversized, solid aluminum axle that locks the forks lowers together
  • Non convertible
  • Available for jbend spokes
  • Jbend: 28 or 32 holes
  • Speedball bearings for smooth and durable rotation
  • Weight: 165g

SRAM predictive steering hubSRAM predictive steering hub

Available: MAY, 2014


weight RISE XX 29” RISE 60 29” ROAM 50 29”
FRONT  583g 695g 750g
623g (PS) 735g (PS) 790g (PS)
REAR 702g 795g 860g
PAIR 1285g 1490g 1610g


Rims RISE XX 29” RISE 60 29” ROAM 50 29”
MATERIAL Unidirectional and woven carbon fiber and high
impact resin
Carbon fiber and HS resin Aluminum 6061 T6
PROFILE Symmetrical Asymmetric – offset 2.5mm UST – asymmetrical 2.5mm offset TAPER CORE
FINISH UD fiber, bake-on decals, matte clear coat UD and woven carbon fiber Sand blasted black ano with bake-on decals
HEIGHT 30mm 26mm 21mm
INTERNAL WIDTH n/a 19mm 21mm (21c) WIDE ANGLE
EXTERNAL WIDTH 25mm 26mm 25.5mm
JOINT n/a n/a Welded
DRILLING Standard Standard Standard with tubeless tape


Hubs RISE XX 29” RISE 60 29” ROAM 50 29”
HUB SHELL MATERIAL Aluminum Aluminum Aluminum
HUB SHELL FINISH Dual Tone: black ano,
second machining and arctic grey ano
Polished – Black Ano Black Ano – matte / glossy finish
AXLE MATERIAL Tapered aluminum Alloy front / Titanium back Aluminum
BEARING TYPE SPEEDBALL CERAMIC cartridge 2RS Cartridge bearing 2RS Cartridge bearings 2RS
BEARING QUANTITY 2 (front) and 4 (rear) 2 (front) and 4 (rear) 2 (front) and 4 (rear)
DRIVER BODY MATERIAL Aluminum Aluminum Aluminum
DRIVER MECHANISM / TYPE DOUBLE TIME – 4 pawls 3 pawls with 3 engagement points each Star Ratchet
SPRINGS Individual leaf springs Individual leaf springs 2 coil springs
ENGAGEMENT DEGREES 6.9 deg 6.7 deg 20


Nipples RISE XX 29” RISE 60 29” ROAM 50 29”
MATERIAL Aluminum Aluminum Aluminum
TYPE External External External
FINISH Black Ano Black Ano Black Ano
ANTI-ROTATION Nylon thread locker Nylon thread locker Nylon thread locker


Spokes RISE XX 29” RISE 60 29” ROAM 50 29”
TYPE Sapim CX-Ray – straight pull Sapim CX-Ray – straight pull Custom –straight pull
MATERIAL Stainless steel double butted Stainless steel double butted Stainless steel
SECTION 2.0 / 1.5 / 2.0 2.0 / 1.5 / 2.0 2.2 / 1.5 / 2.0
SHAPE Oval Oval Oval
FINISH Black chrome Black chrome Black chrome
LACING FRONT AND REAR 2 cross 2 cross 2 cross
HUB RETENTION Drilled holes Drilled holes Drilled hole


Compatibility RISE XX 29” RISE 60 29” ROAM 50 29”
TIRE TYPE Tubular Clincher tube type Clincher UST
ETRTO DIMENSION Tubular 622×25 622x19c 622x21c
CASSETTE XD™ Driver Body 11-speed / 10- and 9-speed XD™ Driver Body 11-speed / 10- and 9-speed XD™ Driver Body 11-speed / 10- and 9-speed
ROTORS International standard 6 bolts International standard 6 bolts International standard 6 bolts
9×100 QR / 9×100 QR OS / 15×100 9×100 QR / 15×100
REAR AXLE COMPATIBILITY 10×135 QR / 12×142 10×135 QR / 12×142 10×135 QR / 12×142

SRAM Hub Specifications

Weight Spoke Holes Rotor Compatibility Axle
165g 28 Or 32 International Standard – 6 Bolt PREDICTIVE STEERING

SRAM Wheel pricing

Part Variation USD EU
Rise 60 29″ Front with Predictive Steering Interface includes –
Tubeless Kit
$998 € 887
Roam 50 29 Front UST Aluminum Clincher Tubeless Compatible with Predictive Steering Interface $527 € 468
Rise XX 29″ Front Carbon Tubular Convertible $1,300 € 1,156
Rear Carbon Tubular $1,520 € 1,351
Rear Carbon Tubular XD Driver Body $1,520 € 1,351
Front Carbon Tubular with Predictive Steering Interface $1,341 € 1,192
746 Hub 6-Bolt Disc Rear 32H 12x142mm XD Driver Body $104 € 92
Predictive Steering Hub Front 28H Black 6-Bolt Disc $238 € 211
Front 32H Black 6-Bolt Disc $238 € 211
Maxle Ultimate 15mm Black B1 $52 € 46
15mm Black XC B1 $47 € 42