SRAM ROCKSHOX Reverb Stealth C1 Service Manual
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SRAM ROCKSHOX Reverb Stealth C1 Service Manual

SRAM ROCKSHOX Reverb Stealth C1 Service Manual

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2020-2023
Reverb Stealth C1
SERVICE MANUAL
GEN.0000000007137 Rev B © 2024 SRAM, LLC

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Summary of Contents for SRAM ROCKSHOX Reverb Stealth C1

  • Page 1 2020-2023 Reverb Stealth C1 SERVICE MANUAL GEN.0000000007137 Rev B © 2024 SRAM, LLC...
  • Page 2 SAFETY FIRST! We care about YOU. Please, always wear your safety glasses and protective gloves when servicing RockShox products. Protect yourself! Wear your safety gear! ⚠ WA RNING - PR ESSU RIZED D EV ICE Suspension products may contain pressurized air, nitrogen, springs, and oil. Always wear certified safety glasses (ANSI Z87.1, EN166 EU) when performing any service on a suspension product (suspension fork, rear shock, seatpost).
  • Page 3 Your product's appearance may differ from the pictures contained in this publication. For recycling and environmental compliance information, please visit: www.sram.com/en/company/about/environmental-policy-and-recycling. S u s p e n s i o n S a f e t y P r e c a u t i o n s a n d W a r n i n g s SA F ET Y I N STR UC TI ON S To avoid serious injury or death, you MUST understand and follow the safety information in this document.

  • Page 4: Table Of Contents

    TABLE OF CONTENTS MODEL CODE IDENTIFICATION ..........................................6 WARRANTY AND TRADEMARK ...........................................6 PRODUCT IDENTIFICATION - REVERB STEALTH C1 ....................................6 RECOMMENDED SERVICE INTERVALS ........................................7 SERVICE HISTORY ................................................7 BRASS KEY SIZE ................................................7 TORQUE VALUES ................................................8 PARTS, TOOLS, AND SUPPLIES ..........................................9 EXPLODED VIEW - REVERB STEALTH C1 ..............................10 SEATPOST TROUBLESHOOTING ..................................11 VENT VALVE PROCEDURE............................................
  • Page 5 P a r t P r e p a r a t i o n a n d S e r v i c e P r o c e d u r e s P a r t P r e p a r a t i o n Remove the component from the bicycle before service.

  • Page 6: Model Code Identification

    W a r r a n t y a n d T r a d e m a r k For SRAM Warranty information, visit: www.sram.com/warranty. For SRAM Trademark information, visit: www.sram.com/website-terms-of-use. P r o d u c t I d e n t i f i c a t i o n - R e v e r b S t e a l t h C 1 Production versions of Reverb Stealth can be identified visually.

  • Page 7: Recommended Service Intervals

    Regular service is required to keep your RockShox product working at peak performance. Follow this maintenance schedule and install the service parts included in each service kit that corresponds with the Service Hours Interval recommendation below. For spare part kit contents and details, refer to the RockShox Spare Parts Catalog at www.sram.com/service. Service Hours Interval...

  • Page 8: Torque Values

    T o r q u e V a l u e s Part Tool Torque Internal Internal sealhead to upper post 28 N•m (248 in-lb) 23 mm crowfoot Main piston to inner shaft 4 N•m (35 in-lb) 9 mm crowfoot Poppet valve cover to poppet valve housing 15 mm crowfoot and 10 mm open end wrench 6.5 N•m (56 in-lb)

  • Page 9: Parts, Tools, And Supplies

    P a r t s , T o o l s , a n d S u p p l i e s Parts Bicycle Tools • Reverb Stealth C1 Service Kit - 200 hours • Bicycle work stand Tools •...

  • Page 10: Exploded View - Reverb Stealth C1

    E x p l o d e d V i e w - R e v e r b S t e a l t h C 1 Inner Shaft Assembly Internal Floating Piston Assembly Clamp Nut Poppet Valve STANDARD REMOTE Saddle Clamp - Upper Assembly Bleed Screw...

  • Page 11: Seatpost Troubleshooting

    S e a t p o s t T r o u b l e s h o o t i n g The Vent Valve is located on the bottom of the seatpost and can be used after extended use if the seatpost develops a 'squish' suspension feel in the fully extended position when the rider is seated.
  • Page 12 Depress the Vent Valve with the Vent Valve tool. Hold the top of the seatpost head with your other hand. With the Vent Valve depressed, push the lower post down, and slowly compress the seatpost. Vent Valve Tool When you feel a hard stop point, hold the seatpost in place for 2 seconds, then release the Vent Valve and stop pushing down on the seatpost.
  • Page 13 If successful, install the saddle onto the seatpost. Consult the Reverb, Reverb Stealth, 1x Remote User Manual at www.sram.com/service for saddle installation procedures. Vent Valve Procedure...

  • Page 14: Seatpost Service

    S e a t p o s t S e r v i c e S e a t p o s t R e m o v a l Secure the bicycle in an upright position. NOTI CE The Reverb Stealth seatpost will be removed from the bicycle. Do not clamp the seatpost in a bicycle work stand.
  • Page 15 Set the speed adjuster to the full slow position. Reverb 1x Remote Rotating the speed adjuster to the slowest setting is critical for a successful bleed. Failure to do so may result in insufficient fluid volume inside the hydraulic remote system. Standard Remote: Turn the speed adjuster knob in the opposite direction of the arrow (counter-clockwise) until it stops.
  • Page 16 Loosen the seatpost clamp. Remove the seatpost from the bicycle seat tube while simultaneously Frame hose port pushing the hydraulic hose into the hose port in the bicycle frame. The hose port location will vary depending on the bicycle frame. Consult with your frame manufacturer for additional information.

  • Page 17: Hydraulic Hose Disconnect

    H y d r a u l i c H o s e D i s c o n n e c t The hydraulic hose must be disconnected from the seatpost for all service procedures. The hose does not need to be disconnected from the remote lever for seatpost service. To avoid contact with hydraulic fluid, remove or cover the rear brake caliper before disconnecting the hydraulic hose.

  • Page 18: Lower Post Removal

    5 0 / 2 0 0 / 6 0 0 u r S e r v i c e L o w e r P o s t R e m o v a l Before disassembly, confirm the seatpost is free of any dirt or contaminants. Service procedures are the same for standard and Connectamajig seatpost hose connection types.
  • Page 19 Remove the lock ring from the poppet cover. 24 mm Cone wrench 15 mm Unthread the seatpost collar. Slide the collar down toward the post head. 34 mm or Adjustable wrench Remove the upper post assembly and set it aside on a clean shop towel.
  • Page 20 Clean the inside and outside of the lower post, then set it aside. Dowel Clamp the upper post head into the vise with Reverb Vise Blocks. Reverb Vise Blocks - Flat Remove the three brass keys from the upper post. Example: 3 lines = size 3 key Record the number of lines, which indicate key size, marked on the brass keys for...

  • Page 21: 200 Hour Service

    2 0 0 H o u r S e r v i c e T o p C a p a n d S e a l h e a d B u s h i n g R e p l a c e m e n t The following steps are to be completed during the 200 hour service interval and include replacing parts included in the Reverb Stealth C1 Service Kit - 200 hours.
  • Page 22 Remove the collar assembly from the upper post. Clean the upper post, inner shaft assembly, and the collar assembly. Apply a liberal amount of RockShox Dynamic Seal Grease around the inside of the collar assembly and onto the seals. Carefully, install the collar assembly, dust wiper seal end first, over the sealhead and onto the upper post assembly.
  • Page 23 Install a new o-ring onto the sealhead. Wrap a clean shop towel around the inner shaft at the poppet housing. Carefully spread the bushing ends enough to fit over the poppet housing. Position the new bushing over the poppet housing and around the towel.
  • Page 24 Install a new foam ring. NOTI CE Do not damage the foam ring during installation. To continue with the 200 Hour Service proceed to Brass Key Installation. Top Cap and Sealhead Bushing Replacement...

  • Page 25: 600 Hour Service

    6 0 0 H o u r S e r v i c e I n n e r S h a f t D i s a s s e m b l y ⚠WARN IN G - EYE HA ZARD The seatpost must be depressurized before disassembly.
  • Page 26 The poppet valve may still be pressurized. If pressurized, the poppet valve assembly could eject rapidly from the inner shaft during removal. Wrap a shop towel around the inner shaft to absorb oil when the poppet valve is removed. Cover the poppet valve cover (red) with a cloth shop towel and one hand.
  • Page 27 Clean the inner shaft threads. Clean the poppet valve housing (black) RockShox Suspension Cleaner and the poppet valve cover (red). With the inner shaft clamped in the Reverb vise blocks (7.5 mm slot) nearest to the end of the shaft, thread the poppet valve housing onto the inner shaft and tighten it to the specified torque.
  • Page 28 Wrap a shop towel around and over the internal sealhead. Slowly unthread the sealhead by hand while holding the shop towel over the sealhead. A small amount of air pressure may be released when the sealhead is completely unthreaded. Do not remove the shop towel from the sealhead until the sealhead is completely unthreaded.
  • Page 29 Wipe the inner shaft and Reverb Vise Blocks with a clean shop towel. 9 mm The clamping surfaces must be clean. Clamp the inner shaft into the Reverb Vise Blocks with the main piston up. Remove the main piston from the inner shaft. Reverb Vise Blocks - 7.5 mm Remove the internal sealhead assembly from the inner shaft and discard the sealhead.

  • Page 30: Upper Post Disassembly

    6 0 0 H o u r S e r v i c e U p p e r P o s t D i s a s s e m b l y Clamp the seapost head into the vise with Reverb Vise Blocks. Remove the collar from the upper post and discard it.
  • Page 31 Remove the internal floating piston (IFP) from the upper post. Insert seven to nine plastic cable ties (cable tie size may vary), one at a time, into the upper post and through the center of the IFP. Pull the cable ties out of the upper post and remove the IFP. Optional: Use the hooked end of the non-metallic pick to remove the IFP.

  • Page 32: Top Cap Installation

    6 0 0 H o u r S e r v i c e T o p C a p I n s t a l l a t i o n Apply a liberal amount of RockShox Dynamic Seal Grease around the inside of a new collar and onto the seals.

  • Page 33: Internal Floating Piston (Ifp) Installation

    6 0 0 H o u r S e r v i c e I n t e r n a l F l o a t i n g P i s t o n ( I F P ) I n s t a l l a t i o n Install the Schrader valve and tighten it finger tight.
  • Page 34 Apply a very liberal amount of RockShox Dynamic Seal Grease to the outer and inner surfaces of the new gray C1 IFP, then submerge the IFP in seatpost hydraulic fluid. NOTI CE Install only the new gray C1 IFP. The outer and inner surfaces must be coated with grease and seatpost hydraulic fluid to prevent stiction.
  • Page 35 Internal floating piston (IFP) height: Identify the IFP height (H) measurement on the IFP tool. Reverb Stealth C1 Seatpost Travel (mm) Length (mm) Height (H) (mm) 514.5 Reverb IFP Height Tool IFP height is critical to proper function. Set the internal floating piston (IFP) height inside the upper post. Plastic screwdriver handle Position the Reverb IFP height tool flat on the IFP.

  • Page 36: Inner Shaft Assembly

    6 0 0 H o u r S e r v i c e I n n e r S h a f t A s s e m b l y NOT ICE Inspect each part for scratches. Do not scratch any sealing surfaces when servicing your suspension.
  • Page 37 Thread the main piston onto the inner shaft by hand. 10 mm 4 N•m (35 in-lb) Tighten the main piston to the specified torque. ⚠ WAR NING - CRAS H HAZA RD Parts must be tightened to the specified torque. Failure to do so can result in SERIOUS INJURY OR DEATH.

  • Page 38: Poppet Valve Installation

    6 0 0 H o u r S e r v i c e P o p p e t V a l v e I n s t a l l a t i o n Clamp the inner shaft into the Reverb Vise Blocks, poppet valve housing oriented up.
  • Page 39 Coat each o-ring with seatpost hydraulic fluid. Maxima Serene Hydraulic Seatpost Fluid Maxima Serene Hydraulic Seatpost Fluid Wipe fluid from the poppet valve under the large o-ring. NOTI CE Allow excess fluid to drip off poppet valve before installation. Excessive fluid coating may decrease performance. Insert the poppet valve into the inner shaft, narrow end first.

  • Page 40: Inner Shaft Installation

    6 0 0 H o u r S e r v i c e I n n e r S h a f t I n s t a l l a t i o n Clamp the upper post head back into the Reverb Vise Blocks. Maxima Serene Hydraulic Seatpost Fluid Wrap a shop towel around the top of the upper post.
  • Page 41 Push the sealhead into the upper post and thread the sealhead into the upper post by hand. The poppet valve may move slightly up in the poppet valve housing during sealhead installation. If this occurs, carefully push the poppet valve back into the poppet valve housing, without moving the inner shaft, and stop when the large o-ring is 4 mm above the top edge of the poppet housing.
  • Page 42 Remove the upper post assembly from the vise. Clamp the poppet housing wrench flats in the Reverb Vise Blocks. NOTI CE To avoid damage to the inner shaft, do not clamp the inner shaft into the flat section of the Reverb Vise Blocks. Reverb Vise Blocks - Flat Install the poppet valve cover onto the poppet valve housing and 15 mm...

  • Page 43: 50/200/600 Hour Service

    5 0 / 2 0 0 / 6 0 0 H o u r S e r v i c e L o w e r P o s t I n s t a l l a t i o n Clamp the upper post head into the vise with Reverb Vise Blocks.

  • Page 44: Brass Key Installation

    Refer to the RockShox spare parts catalog at www.sram.com/service for a list of brass key kits available. Worn Brass Key Apply a liberal amount of RockShox Dynamic Seal Grease onto each key slot.
  • Page 45 Align the lower post key slots with the brass keys and ensure the laser etched RockShox logo is aligned with the back of the seatpost head. Key Slots Hold each brass key in place and slide the lower post down until it engages the keys.

  • Page 46: Lock Ring Installation

    5 0 / 2 0 0 / 6 0 0 H o u r S e r v i c e L o c k R i n g I n s t a l l a t i o n Clamp the lower post into the Reverb Vise Blocks with the post head 300 psi (20.7 bar) oriented up.
  • Page 47 Pull the upper post down to full extension until the lock ring threads 24 mm 5 N•m (60 in-lb) 15 mm contact the lower post. Thread the lock ring into the lower post and tighten it to the specified torque. ⚠...

  • Page 48: Remote Lever

    For a list of available Reverb Stealth hydraulic hose kits, refer to the RockShox Spare Parts catalog at www.sram.com/service. N OT ICE If Reverb hydraulic fluid leaks from the remote lever while under pressure or in use, the remote lever assembly must be replaced.
  • Page 49 Reverb 1x Remote: Remove the strain relief nut. 13 mm Reverb 1x Remote Remove the hose barb and discard it. Cut 3 - 4 mm off the end of the hose. Hydraulic hose cutters Standard Remote: Thread the remote lever hose barb into the hydraulic hose.
  • Page 50 The Reverb remote hydraulic system must be bled after the hose is installed onto the remote lever. Refer to the 'Reverb Stealth and Reverb Hydraulic Hose Replacement and Remote System Bleed' manual, available at www.sram.com/service, for hydraulic remote system bleed and seatpost installation procedures.

  • Page 51: Hydraulic Hose

    H y d r a u l i c H o s e 5 0 / 2 0 0 / 6 0 0 H o u r S e r v i c e C o n n e c t t o S e a t p o s t There are two Reverb Stealth C1 hydraulic hose connection types: 1) hose barb and barb strain relief nut and 2) Connectamajig.
  • Page 52 The Reverb Stealth hydraulic remote system must be bled before the seatpost can be reinstalled and used. Refer to the Reverb Stealth and Reverb Hydraulic Hose Replacement and Remote System Bleed manual, available at www.sram.com/service, for bleed and seatpost installation procedures.
  • Page 53 ASIAN HEADQUARTERS WORLD HEADQUARTERS EUROPEAN HEADQUARTERS SRAM Taiwan SRAM, LLC SRAM Europe No. 1598-8 Chung Shan Road 1000 W. Fulton Market, 4th Floor Paasbosweg 14-16 Shen Kang Hsiang, Taichung City Chicago, Illinois 60607 3862ZS Nijkerk Taiwan U.S.A. The Netherlands...

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