2004 USER MANUAL
Contents
1. Rebound Damping Adjustment The shock includes a red rebound damping adjustment knob Rebound is the extension or return stroke of the shock Rebound damping adjustment allows you to control the rate at which the shock extends after it is compressed The shock s rebound is quickest when the adjustment knob is in the full counterclockwise position Rebound is slowest when the adjustment knob is in the full clockwise position SETTING REBOUND When you are setting rebound a good starting point is the curb test Be sure this is done after you set up your sag 1 Set your rebound adjuster fully counterclockwise 2 Ride the bike off the curb sitting in the saddle and count the number of times the shock bounces before returning to nominal sag You want to achieve one bounce 3 Turn the rebound adjuster a quarter turn clockwise and ride off the curb again Continue to do this until one bounce is achieved 4 Record the number of turns from the fully closed full counterclockwise position MAINTENANCE After Every 8 hours of Riding e Clean your shock with mild soap and a toothbrush Keep the body threads clean and lubricated Keep mounting hardware clean and lubricated Refer to bicycle s owner s manual for correct mounting hardware torque values Also be sure to verify that your shock s mounting hardware is properly torqued 60 in lb IMPORTANT OVER TORQUED MOUNTING HARDWARE WILL CAUSE THE SHOCK TO BIND AND MALFU2. AR SHOCKS CAN BE EXTREMELY DANGEROUS AND MAY RESULT IN SEVERE AND OR FATAL INJURIES PERFORMANCE TUNING RockShox rear shocks can be tuned for your particular weight riding style and terrain IMPORTANT BE SURE YOU TAKE YOUR BIKE FOR A TEST RIDE TO SEE IF THE REAR SHOCK IS SET UP FOR YOU STRAIGHT OFF THE SHOWROOM FLOOR 4 954 308185 000 REV A SRAM CORPORATION 2004 U TURN REAR SHOCK USER MANUAL ENGLISH By adjusting the air pressure travel and rebound the U Turn rear shock can be tuned for your particular weight riding style and terrain You may benefit by making tuning adjustments to suit your specific needs When tuning suspension always make one change at a time and write it down This allows you to understand how each change affects your ride Setting Sag Sag is the amount of shock travel that is used as the rider sits stationary on the bike Typically sag is 15 to 30 percent of all available wheel travel Check with your bicycle manufacturer to determine the rear wheel travel and recommended sag for your particular bike before setting sag For the U Turn rear shock you will be changing the air spring rate to set sag Adjusting positive air pressure determines the spring rate or stiffness of the shock The more air you put in the firmer your shock will be Initial Tuning Set up Ensure your shock is set up with the following initial settings Then start fine tuning your shock according to your weight riding style a
3. NCTION UNDER TORQUED MOUNTING HARDWARE WILL DAMAGE FRAME HARDWARE AND SHOCK After every 20 hours of riding Remove clean and grease mounting hardware IMPORTANT NEVER USE A HIGH POWERED WASHER TO CLEAN THE SHOCK SERVICE Your rear shock should be fully serviced every year by a qualified technician with proper tools Contact your local RockShox dealer RockShox Technical Services or the nearest distributor see International Distributors List 6 954 308185 000 Rev A SRAM CORPORATION 2004 U TURN REAR SHOCK USER MANUAL ENGLISH Read the Warranty section for further warranty repair and contact information WARRANTY RockShox Inc warrants its products for a period of two years from original date of purchase to be free from defects in materials or workmanship RockShox USA or an authorized RockShox Agent must inspect all RockShox products If a product is found by RockShox or its authorized agent to be defective in materials or workmanship replacement or repair is at the option of RockShox This warranty is the sole and exclusive remedy RockShox shall not be held liable for any indirect special or consequential damages Exclusions of Warranty This warranty does not apply to products which have not been properly installed and adjusted according to RockShox installation instructions The warranty does not cover any product that has been subject to misuse or whose serial number has been altered defaced or removed This wa
4. Peerers assii Perr com rida Foe cot eee ee br 8 kkkkl443445 Perens 2004 USER MANUAL SRAM CORPORATION 2004 U TURN REAR SHOCK USER MANUAL ENGLISH Congratulations You have the bestin suspension components on your bicycle This manual contains important information about the safe operation and maintenance of your shock To ensure that your RockShox shock performs properly we recommend you have a gualified bicycle mechanic service your shock We also urge you to follow our recommendations to help make your bicycling experience more enjoyable and trouble free Rebound Adjustment Knob Au enliegender Einsteller f r Zugstufe Adjustador externo de rebote Bouton de r glage externe du rebond Regolatore del ritorno Regolatore esterno del ritorno MATUNGY KA Externe terugveringsknop Regulador externo de recupera 20 Positive Schrader Air Valve s Positiv Luftventil V iula de aure positiva VElva air positive Valvola aria in pressione RSF LINV 7979 I8C Klep positieve lucht VE iula de ar positivo sem adaptador Negative Schrader Air Valve Negativ Luftfeder ohne Adapter VE lvula de aire negative sin adaptor Valve airn gative sans adaptateur Valvola aria in depressione senza adattatore RHF AT LINN 7979 I8 CL Klep negatieve lucht zonder adapter V lula de ar negativo sem adaptador Shaft Eyelet se an der F hrungsstange Ojal del eje illetde la tige Occhiello albero 2 7FT4b3 h S
5. chacht oogje Olhal do pisto Threaded Collar Ring mit Gewinde Casquillo roscado Collier taraud Collare filettato Ht amp A gt Stelring met schroefdraad Anilha roscada U Turn Adjuster U Turn Einsteller Mando de ajuste del U Turn R gleur U Turn Regolatore U Turn U Turn Saif Instelling U Turn Regulador de U Turn Body Geh use Carcasa Corps Corpo ae Romp Corpo Body Eyelet se am Geh use Ojal de la carcasa illet du corps Occhiello corpo ARF4 FL UYb Romp oogje Olhal do corpo NOTE YOUR SHOCK S APPEARANCE MAY VARY FROM THE ILLUSTRATIONS PHOTOS IN THIS MANUAL FOR THE LATEST INFORMATION ABOUT YOUR FORK VISIT OUR WEBSITE AT WWW ROCKSHOX COM SRAM CORPORATION APRIL 2003 3 ENGLISH SRAM CORPORATION 2004 U TURN REAR SHOCK USER MANUAL RIDING A BIKE IS DANGEROUS NOT PROPERLY MAINTAINING OR INSPECTING YOUR BIKE IS EVEN MORE DANGEROUS IT S ALSO DANGEROUS NOT TO READ THESE INSTRUCTIONS 1 Before riding the bicycle be sure the brakes are properly installed and adjusted If the brakes don t work properly the rider could suffer serious and or fatal injuries If the shock ever loses oil or if it makes sounds of excessive topping out stop riding the bicycle immediately and have the shock inspected by a dealer or call RockShox Continuing to ride with the shock in either of these conditions could result in loss of control of the bicycle with possible serious and or fatal injuries Alway
6. ip ADJUSTING THE NEGATIVE AIR CHAMBER DETERMINES THE EASE OF INITIAL COMPRESSION THE HIGHER THE AIR PRESSURE YOU PUT IN THE EASIER IT IS TO COMPRESS THE SHOCK 7 Measure the sag once again to make sure it is the same Write down the measurement and air pressure reading from the shock 8 Install both air caps Example If your bike has 4 of rear wheel travel and you want to set it up for cross country riding your sag should be 0 6 1 2 in If you weigh 175 lb pressurize the positive chamber to 175 psi and measure your sag Then pressurize the negative air chamber to 175 psi and remeasure sag SRAM CORPORATION APRIL 2003 5 ENGLISH SRAM CORPORATION 2004 U TURN REAR SHOCK USER MANUAL NOTE IT IS IMPORTANT THAT THE SHOCK HAS THE AIR VALVE CAPS ON AT ALL TIMES OR THE SHOCK CAN PREMATURELY LOSE AIR Travel Adjustment Turning the travel adjuster clockwise shortens the bike s travel increases spring rate and lowers the bottom bracket There are three full turns of adjustment for a 1 2 inch of shock travel Depending on your bike s leverage ratio this could be anywhere from to 1 1 2 inches of rear travel When adjusting travel keep in mind the type of riding and riding conditions To adjust the travel place your weight on the saddle to compress the shock With the shock compressed turn the adjuster either clockwise or counterclockwise NoTE IT IS DIFFICULT TO TURN THE TRAVEL ADJUSTER IF YOU DO NOT COMPRESS THE SHOCK
7. nd terrain Travel adjustment Full travel position counterclockwise e Positive and negative air pressure Body weight minus 10 psi Rebound one complete turn counterclockwise from closed Selecting Air Pressure Spring Rate 1 Depressurize the positive and negative ait chamber by removing the air cap and depressing the valve core stems 2 Because every bike is different a good starting point is to pressurize the positive air chamber to an air pressure equaling your body weight minus 10 psi Note AS BICYCLE DESIGNS DIFFER SIGNIFICANTLY YOUR BICYCLE MAY REQUIRE DIFFERENT PRESSURES OR SET UP TECHNIQUES THESE INSTRUCTIONS ARE INTENDED AS A GUIDELINE ONLY 3 After adding air to your shock based on your body weight and without sitting on the bike measure the distance from the floor to the seat rear height Write it down 4 While you sit in a normal riding position have a friend measure the same distance The difference between the two measurements is sag Determine what percentage of total wheel travel this sag represents 5 Tf the sag is less than your bicycle manufacturet s recommendation a lower air pressure should be used Tf the sag is greater than your bike manufacturer s recommendation a greater ait pressure should be used IMPORTANT DO NOT USE AIR PRESSURE OUTSIDE THE 100 To 250 PSI RANGE 6 Once sag has been set pressurize the negative air chamber to match the positive air chamber pressure T
8. rranty does not apply to damage to the product caused by a crash impact abuse of the product non compliance with manufacturer s specifications or any other circumstances in which the product has been subjected to forces or loads beyond its design This warranty does not cover paint damage or modifications to the product Original proof of purchase is required Warranty repair replacement is only valid upon presentation of proof of purchase directly submitted to RockShox at the time of warranty evaluation Warranty repair or replacement is at the discretion of RockShox or its authorized agent upon physical product evaluation and proof of purchase This warranty does not include or cover common wear and tear parts which are subject to damage as a result of normal use failure to service product according to RockShox recommendations wet conditions racing use of disc brakes rider weight riding or installation in conditions or applications other than recommended Wear and Tear parts are identified as External dust seals bushings foam rings rubber moving parts such as air sealing o rings and glide rings stripped threaded shafts or bolts upper tubes stanchions rear shock mounting hardware and springs and fork drop outs Pioneer Support Program In the event parts are unavailable at the time of your repair at the option of RockShox or its authorized agent a replacement fork may be provided at a determined discount price Warrant
9. s use genuine RockShox parts Use of after market replacement parts voids the warranty and could cause structural failure to the shock Structural failure could result in loss of control of the bicycle with possible serious and or fatal injuries U TURN REAR SHOCK Based on the SID rear shock the U Turn rear shock allows you to choose the amount of rear wheel travel and bottom bracket height Used in combination with the Duke U Turn Psylo U Turn or adjustable travel front suspension the U Turn rear shock system allows the rider to choose exactly how much travel they need for the trail or terrain The U turn system enables the chassis to maintain consistent frame geometry regardless of travel adjustment Like the front U Turn it automatically adjust the spring rate relative to the adjusted travel firmer in the shorter travel setting and softer in the longer travel setting Infinite adjustability allows the rider to turn the small bump ride from plush to firm A twist of the U Turn shock body changes the personality and feel of your bike without using a shock pump The U Turn shock gives your bike two personalities from fast and efficient XC riding to free ride and anywhere in between INSTALLATION It is extremely important that your RockShox rear shock is installed correctly by a qualified bicycle mechanic with proper tools Consult your bicycle manufacturer s instructions for proper installation of your rear shock IMPROPERLY INSTALLED RE
10. y Expenses Incurred The RockShox warranty policy excludes expenses incurred as a result of transportation of product from a RockShox dealer to RockShox USA or its authorized distributor labor performed by a RockShox dealer for removal of RockShox product or warranty repair work performed by a RockShox dealer Warranty work performed by a RockShox dealer is voluntary Warranty Repair If for any reason it should be necessary to have warranty work done return the product to a RockShox dealer In the USA dealers are required to call for a Return Authorization number RA prior to returning product Outside the USA dealers are required to call an authorized RockShox Distributor For more technical information visit our website at www rockshox com For toll free technical support in the USA call 1 800 677 7177 Dealers outside the USA must contact their local dealer or distributor For a complete list of Authorized Distributors outside the USA visit www rockshox com SRAM CORPORATION APRIL 2003 7
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