Liquid error: Could not find asset snippets/bold-options-hybrid.liquid



Below are full rebuild instructions for your OneUp V2 Dropper Post. This service should take less than 20 minutes and should be completed every 250-350hrs of riding depending on the conditions in which to ride. Always check your air pressure after servicing.  The pressure should be 250-300psi with the post fully extended.

Users are encouraged to perform regular maintenance earlier if required. If something seems rough or unusual after servicing please discontinue riding and contact to avoid additional damage to the post.

 Tools needed

  • Waterproof grease (ie. Slickoleum, Slick Honey) 
  • Rubbing alcohol
  • Needle-nose Pliers
  • 2 mm hex
  • 14 mm or 17mm wrench (or adjustable wrench)
  • Toothbrush, and Lint-free Cloth


    Step 1: Remove Seat and UPPER/LOWER CLAMP (2) and (3)

    • Move the Dropper to about 50mm (2") below full travel
    • *TIP* remove the rear clamp bolt fully and do not adjust the front clamp bolt.  When you reinstall the seat, torque the rear bolt to 8Nm (70 in-lbs) and the seat angle will be correct.


    Step 2: Remove the VALVE CAP/COVER (5)

    • This cap will either be a threaded cap (left) or a slide-on cap (right)


    Step 3: Remove CARTRIDGE LOCKRING (6) 

    • Using a pair on needle-nose pliers unthread and remove the Cartridge Lockring.


    Step 4: Unscrew ACTUATOR (16) from LOWER TUBE (12)

    • For V2.1 actuators use a 14mm (9/16") spanner or a adjustable wrench
    • For V2.0 actuators use a 17mm spanner or a crescent wrench
    • Unscrew the bottom green actuator using the wrench

      Step 5: Remove LOCK BOLTS (17)

      • Use a 2mm hex to completely remove the actuator lock bolts. 

      Step 6: Remove ACTUATOR (16) from CARTRIDGE (14)

      • Slide the actuator and foam washer off of shaft.


      Step 7: Remove CARTRIDGE (14) from Dropper Assembly

      • Slide the cartridge out of the dropper assembly.
      • Make sure to not lose Cartridge washer (13)
      • If you are only completing a cartridge swap, stop here and complete steps 1-6 in reverse order.


      Step 8: Unscrew MID CAP ASSEMBLY (8)

      • Unscrew the mid cap assembly by hand or using a strap wrench and slide it up towards the seatpost head.

        Step 9: Remove LOWER TUBE (12) from UPPER TUBE (7)

        • Slide the lower tube away from the upper tube to fully remove it
        • Remove old grease from inside the lower tube


        Step 10: Remove GUIDE PINS (10)

        • Using a small pick or the tip of a ziptie remove the three guide pins


        Step 11: Remove BUSHINGS (9) and (11)

        • Remove the upper and lower bushings by hand


        Step 12: Remove MID CAP ASSEMBLY (8)

        • Slide the Mid Cap Assemby off of the Upper Tube
        • Remove old grease from the Upper Tube
        • Clean the upper tube with rubbing alcohol


        Step 13: Assess parts that need replacement

        • Parts 8a-11 are included in SP1C0053
        • Oversized pins 19 & 20 are included in SP1C0061

        Step 14: Reinstall MID CAP ASSEMBLY (8), GUIDE PINS (10) and BUSHINGS (9) and (11)

        • With Parts 8a-8e assembled slide Mid Cap Assembly onto the Upper Tube 
        • Reinstall Upper and Lower bushings
        • Reinstall Guide Pins or install oversized guide pins

        Step 15: Apply grease

        • Using a toothbrush apply grease to the area around the brass pins, the bushings of the upper assembly and inside the outer post body.

        Step 16: Reassemble LOWER TUBE (12) and UPPER TUBE (7)

        • Align the brass pins with machined grooves in the lower post. and the lower tube laser with the rear of the upper tube

        Step 17: Secure MID CAP ASSEMBLY (8)

        • Thread the Mid Cap Assembly into the lower tube and tighten by hand or with strap wrench

        Step 18: Reinstall CARTRIDGE (14) into Dropper Assembly

        • Slide the cartridge into the dropper assembly.
        • Make sure Cartridge washer (13) is properly in place
        • Reinstall Cartridge Lockring (6) and Valve Cap/Cover (5)

        Step 19: Reassemble ACTUATOR (16)

        • Slide the foam washer onto the cartridge shaft
        • Slide the actuator over the end of the cartridge shaft.
        • Install the thru-bolts making sure they slide through the grooves of the cartridge shaft.
        • Tighten the actuator securing pins using 2mm hex hand tight.


        Step 20: Secure ACTUATOR (16) to LOWER TUBE (12)

        • Thread the lower actuator assembly into the lower post body
        • Tighten using the same wrench as was used for disassembly


          Step 21: Reinstall Seat and UPPER/LOWER CLAMP (2) and (3)

          • Remember the tip from Step 1

          Step 22: Reinstall the post and go ride your bike.