Zoom "HB-875E" 2-Piston Hydraulic Brake Calliper

• Zoom 2-piston hydraulic callipers are factory stock on makes/models such as:
  • Kaabo models, typically Kaabo branded, of:
    • Wolf models including Warrior X, 11 (including King), Warrior GT series (including King GT) and King GTR.
    • Mantis Pro.
  • Dragon models of:
    • Pre 2024 models of the Dragon Lightning series (such as Lightning V2), typically red calliper with white Dragon branding.
    • The Dragon Slayer (and the similar Bolzzen Commando inaugural model) which is Joyor S Series OEM.
  • Most of the VSETT models (VSETT branded).
    • Exception being the inaugural VSETT models which had a NUTT A5-D calliper with NUTT YD-01 pads.
  • Zero models of:
    • "Zero 10X and Zero 11X" and ODM variants of the DDM-T10 and DDM-X11 that equipped with hydraulic callipers, noting hydraulic exceptions of:
      • The Zero "Limited" models which has a NUTT A5-D calliper with NUTT YD-01 pads.
      • The Zero mechanical/cable brake have a JAK-8 V calliper and use a "Crown" pad.
  • Teverun Fighter Series 2-piston callipers models. Note the 4-piston models use Logan 4-Piston pads.
  • Various other models such as those from KuKirin, Mercane and Veloz (e.g. G2 Master).

• Available in Left or Right version. This orientation defines the location of the banjo bolt (hydraulic line termination) as you look at the side of the calliper. For example, a calliper with right orientation that sits on top of swing arm will suit rear right & front left and also front right if located behind the fork.
  • Kaabo typically adopt Right versions on Warrior models with exception to the GTR which adopts a Left at front. Kaabo Mantis 8/10 and Teverun Fighter adopts Left versions.
• Supplied with Long or Short hydraulic line. These are BH59 type with factory-crimped Banjo Bolt and pre-fitted to the calliper with washers and screw. The other end is fitted with a BH59 (gold) needle with threaded head with capped, pre-bled and terminated to lever with the optional 3-piece kit. Lengths of:
  • Long, for rear. Kaabo Warrior 11/GT spare is 1900mm length. Teverun Fighter 11 is 2100mm length.
  • Short, for front. Kaabo Warrior 11/GT spare is 1140mm length. Teverun Fighter 11 is 1230mm length.
• Callipers are supplied with bracket / adapter (not pictured) that mounts the calliper. There are two common types:
  • F-160 R-140 bracket:
    8mm & 12mm offset - as adopted Kaabo Wolf Warrior King/GT rear, or
  • F-180 R-160 bracket
    23mm offset - as adopted on Kaabo Wolf Warrior King/GT Series front and Factory Teverun Fighter 11 front/rear.
    
    If renewing, typically existing brackets are used. The designation does not necessarily relate to the brake disc rotor size (mm). For example, Warriors have 160mm rotors use a a F-160 R-140 size bracket on rear.

• For each calliper, an optional brake lever termination kit:
  • Include olive/bushing only
  • 3-piece: Include olive/bushing, compression nut and cover/hood/boot as shown below:
    

The compression nut and cover can be re-used when renewing, bushing/olive is typically single use.

• Kaabo Factory Spare callipers are Kaabo Branded, Teverun are Zoom branded.

Notes:

1. This calliper has ambiguous designation as a different Zoom calliper typically not on eScooters which adopts a hook pad also has HB875E designation.
2. For brake pads, use catalogue item: Semi-metal brake pad suit Zoom Hydraulic.
3. Levers are also available as a separate product item: Zoom Hydraulic Brake LeverSeries.
4. The hydraulic line has a factory fitted banjo connector with bolt. It is not serviceable nor supplied individually (economically). It is proprietary and not common with any other brand calliper. If you can ascertain the washers inside the banjo bolt are damaged, you could renew them however it is best to renew the calliper and run a new hose which is supplied with calliper. 3rd party banjo's, such as that on common "Shimano SLX/XTY/XTR" Banjo's do not fit (and also run smaller inner diameter BH-90 hose). Banjo's are troublesome and an unnecessary point of failure - best to avoid them. 3 o-rings: one 4x1.5mm & two 5x1.5mm, my go to's. Image below shows a Zoom banjo bolt that has reached end of service life - note the deformations on the metal.
5. 
   
   
6. Bracket offset is distance from centre of threaded hole in the bracket that connects to the scooter to the surface of the edge of bracket where the calliper sits. These brackets are typically labelled with a nameplate on the underside.
7. eScootNow also stocks Logan 4-Piston callipers as NAMI spares which adopt Left orientation. Zoom's inaugural 4-Piston HB-876 is a rebrand of the Logan calliper (shown below on left), Zoom subsequently released their HB-890 which is a non-Logan version (different shape, terraced profile) shown on right.
   
8. The e or -E prefix designation applies to the electric brake switch on the lever.
9. US spelling caliper.