Juin JuinTECH GTF-4 4-Piston Hybrid Hydraulic Disc Brake Calipers – Front & Rear Set (2 Calipers, No Rotor), Flat Mount, Cable-Actuated for Mechanical Road Levers, Rear 160mm Direct (Titan)

Juin JuinTECH GTF-4 4-Piston Hybrid Hydraulic Disc Brake Calipers – Front & Rear Set (2 Calipers, No Rotor), Flat Mount, Cable-Actuated for Mechanical Road Levers, Rear 160mm Direct (Titan)

• DESIGNED & PRECISION-MADE IN TAIWAN — A DIFFERENT CLASS — JuinTECH designs and machines the GTF-4 in-house in Taiwan, not a cheap, mass-produced caliper. The body is die-forged from European high-purity 6061 aluminum, then the piston bores are CNC-machined — forged for strength, machined for precision. Just 136g per caliper.
• TRUE HYDRAULIC POWER — OPPOSED 4-PISTON CONTROL — GTF-4 turns your cable input into full hydraulic braking inside a sealed caliper: four opposed pistons press the pads evenly for immense yet linear, controllable modulation. A compact Flat Mount design that fits modern road, gravel and new-generation folding frames. Cable-actuated for standard mechanical short-pull / drop-bar road levers.
• OPPOSED 4-PISTON — LINEAR, CONTROLLABLE POWER — Four pistons spread clamping force evenly for a fully pressed pad, even wear and braking that grows linearly with your finger — modulation, not just stopping. Not a stripped-down GTF-6: fewer pistons buy a lighter body, wider frame compatibility and more intuitive fitting.
• FULL-METAL 7075 PISTONS, TOOL-FREE ADJUST, FLAT MOUNT — Four pistons in 7-series aerospace-grade 7075 aluminum route heat off the pads into the die-forged body for fade resistance; pair with JuinTECH RADIAL rotors to shed it. A tool-free knob restores pad-wear clearance by hand, roadside. Sealed hydrophobic mineral oil stays consistent in rain or mud. Flat Mount — rear takes a 160mm rotor with no adapter.
• DP43 + SP43 PADS — FRONT & REAR SET, GET THE CABLES RIGHT — Sold as a full-bike pair of 2 calipers (rotors not included) for Flat Mount frames. Uses DP43 + SP43 pads (shared with GTP-4 and ETF). Fits short-pull / caliper-brake (drop-bar) road levers. Run compressionless housing + a low-friction inner cable for full performance — even more so on folding bikes with tighter routing. Zero-paint anodized finish. UNLEASH! NEXT LEVEL.