Tektro Orion HD-M750 4-piston hydraulic disc brakes, front and rear, with rotors

A complete 4-piston hydraulic disc brake set for trail riding and mid-drive e-MTBs: two pre-bled Tektro Orion HD-M750 assembled sets (forged lever, hose and 4-piston forged caliper with resin pads fitted) plus a pair of Tektro 2.3 mm rotors - the thick rotor this caliper is built for.

Kit includes

Options

Rotor sizes: 6-bolt: Tektro 2.3 mm 160, 180, 203 mm. The kit defaults to two 180 mm (Tektro 2.3 mm); set that row to 0 and pick another size, or mix sizes (a larger rotor at the front is common). Orion HD-M750 takes 160 to 203 mm rotors (the Tektro sizes we stock).

Fit-up parts, sold separately (linked here and shown with this kit): Tektro mineral oil, a bleed kit. Add what your bike needs to the cart alongside the kit.

This kit is the 6-bolt version - ask us for Centre Lock rotors if your hubs need them.

Already have rotors? Untick them and the price follows the parts you keep. Every part in this kit can be deselected, so a bike that only needs one end, or already has the right rotors, is not charged for the rest.

Fitting notes

Australian convention: the right-hand lever works the front brake and the left-hand lever the rear; the sets are built that way. Most post-mount forks and frames take a 160 mm rotor directly; check your fork or frame's native size - a larger rotor needs the matching Tektro adapter only when the mount is smaller than the rotor (not part of this kit - reuse the bracket already on your bike, or ask us). 6-bolt rotors bolt straight to a 6-bolt hub. This caliper takes 2.3 mm rotors only - the rotors in this kit are Tektro's 2.3 mm TR-17 pattern; do not fit a 1.8 mm rotor. Service fluid: Tektro mineral oil.

Tune Cycles supplies and fits these brakes. Choose your options above; if you are unsure what your fork, frame or hubs take, ask us before you order.

Every part in this kit is covered by Tektro's manufacturer warranty against defects in materials and workmanship (two years from the original purchase date). Brake pads and rotors are wear items; wear from normal use, incorrect installation, crash damage or modification is not covered. For any warranty claim or support, return the part to Tune Cycles and we will handle it with Tektro.

  • Orion HD-M750 4-piston post-mount hydraulic caliper, front and rear
  • Built for 2.3 mm rotors only (Tektro TR-17 6-bolt) - a standard 1.8 mm rotor does not suit this caliper
  • Tektro recommends the Orion for e-bikes with a centre motor; I-Spec II and Matchmaker compatible lever, reach adjust, 2-finger blade
  • Top-loading pads, free-angle hose connector
  • Assembled and pre-bled sets - fit without a bleed
  • Two 180 mm Tektro 2.3 mm stainless 6-bolt rotors included
  • Rotor options: 6-bolt 160, 180, 203 mm - mix front and rear sizes
  • Rotor range for Orion HD-M750: 160 to 203 mm (the Tektro sizes we stock)
  • Hydraulic system: Tektro mineral oil
  • Sold separately, linked in the description: oil, bleed kit
  • Editable kit: deselect any part you already have; the price follows the parts you keep
BrandTektro
SeriesTektro Orion HD-M750
CaliperOrion HD-M750, 4-piston, post-mount
LeverOrion HD-M750 forged lever, I-Spec II and Matchmaker compatible, reach adjustment, hinged two-piece bracket, 2-finger blade
BuildTwo assembled, pre-bled sets: front (right lever) and rear (left lever)
Pads fittedTektro balanced resin pads
FluidTektro mineral oil
Rotors included2 x Tektro 2.3 mm 180 mm 6-bolt
Rotor options6-bolt: Tektro 2.3 mm 160, 180, 203 mm
Rotor range (caliper)160-203 mm
Oil (sold separately)Tektro-TRP- Hydraulic Mineral disc brake Oil High temp (270c boiling point) 1000mL
Bleed kit (sold separately)Service/bleed kit Tektro/TRP
DisciplineTrail, e-MTB (Tektro: recommended for centre-motor e-bikes)
SKU TEK-M750-6B-BRAKESET
Brand Tektro

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