New · Professional hydraulic disc brake

G3 Four-Piston

Four-piston open system built for off-road and moped-class electric bikes. Free-angle hose connector suits varied frame routing.

GEMMA G3 Four-Piston

Especially for off-road / moped type electric bikes.

Four-piston open system built for off-road and moped-class electric bikes. Free-angle hose connector suits varied frame routing.

  • 4-piston
  • Ø180 / Ø203 mm
  • Wave rotor
  • Mid-motor e-bike

Specification

Standard lead time 60–75 days. Hose length, rotor size and pad compound are configured per order.

SystemOpen system, 4-piston
Recommended for e-bikes with mid-motor
Easy installation, adjustment and maintenance
Good braking effect for bikes with large torque and strong power
Caliper4-piston, forged aluminium body
Free angle of hose connector for varied frames
Easy installation and maintenance from top
Finish: black
WeightFront wheel — 395 g
Rear wheel — 301 g
Excludes rotor, adapter and mounting bolts
LeverForged aluminium lever / cast aluminium bracket
I-Spec II and Matchmaker compatible
Reach adjustment
Two-piece hinged bracket
4-finger blade
Finish: black
RotorWave type (G180), 2.3 mm thickness
High heat dispersion and heat tolerance
Diameter: Ø180 mm
Also available: Ø203 mm
PadsDurable, high-performance sintered pad
Replacement: ceramic / resin

Product sheet

Original description · Professional hydraulic disc brake

professional hydraulic disc brake
especially for off road / moped type ELECTRIC BIKE

SYSTEM

Open system, 4-piston
Recommend for e-bike with mid-motor
Easy installation, adjustment and maintenance
be good braking effect for bikes with large torque and strong power

CALIPER

4-Piston, Forged Aluminum body
Free angle of hose connector for varied frames
Easy installation & maintenance from top
Finish : Black

WEIGHT

Front wheel - 395 grams / Rear wheel - 301 grams
( Exclude rotor, adapter & mounting bolts )

LEVER

Forged aluminum lever / Cast aluminum bracket
I-Spec Il & Matchmaker compatible
Reach adjustment
Two pieces hinged bracket
4 finger blade
Finish : Black

ROTOR

Wave type (G180), 2.3mm thickness
High heat dispersion & heat tolerance
Diameter : Ø180mm
Also available : Ø203mm

PADS

Durable and high performance sintered pad
Replacement : Ceramic/Resin

Detail

GEMMA G3 Four-Piston 2

Related models

GEMMA G3-1 Four-PistonNew

G3-1 Four-Piston

Professional hydraulic disc brake

4-pistonØ180 / Ø203 mmAirflow rotor251 g front

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