Juin JuinTECH GTP-4 4-Piston Hybrid Hydraulic Disc Brake Calipers – Front & Rear Set (2 Calipers, No Rotor), Post Mount/ISO, Cable-Actuated for Mechanical Road Levers (Grey)

Juin JuinTECH GTP-4 4-Piston Hybrid Hydraulic Disc Brake Calipers – Front & Rear Set (2 Calipers, No Rotor), Post Mount/ISO, Cable-Actuated for Mechanical Road Levers (Grey)

• DESIGNED & PRECISION-MADE IN TAIWAN — A DIFFERENT CLASS — JuinTECH designs, forges and machines the GTP-4 in-house in Taiwan with 10+ years of cable-actuated hydraulic braking expertise — not a cheap, mass-produced caliper. Each body is one-piece forged from European high-purity 6061 aluminum billet, then multi-axis CNC-machined: forging builds in strength and stability, CNC delivers precision.
• TRUE HYDRAULIC POWER — OPPOSED 4-PISTON CONTROL — GTP-4 turns your cable input into full hydraulic braking inside a sealed caliper: opposed 4-piston design presses the pads evenly for immense yet linear, controllable modulation — the braking premium metal road-bike brands choose as OE. Cable-actuated for standard mechanical road levers on Post Mount / ISO frames.
• FULL-METAL 7075 PISTONS — HEAT GETS ROUTED OUT, NOT TRAPPED — Four opposed pistons in 7-series aerospace-grade 7075 aluminum with a wear-resistant coating actively pull heat off the pads into the caliper body, turning the whole caliper into the heat-shedding surface (bodies left unpainted by design). Pair with JuinTECH RADIAL rotors' 3D carriers to throw that heat clear.
• TOOL-FREE PAD-WEAR ADJUSTMENT + STABLE MINERAL OIL — A JuinTECH tool-free knob winds back pad-wear clearance by hand, roadside, no tools — keeping lever travel consistent over the pad's life. The fully sealed circuit runs high-stability mineral oil that won't absorb moisture, so braking stays dependable on long descents, in rain or mud.
• COMPLETE FRONT & REAR SET — DP43 + SP43 PADS, GET THE CABLES RIGHT — Sold as a full-bike pair of 2 calipers (rotors not included) for short-pull / caliper-brake (drop-bar) road levers on Post Mount / ISO frames. Uses DP43 + SP43 pads (shared with GTF-4 and ETF). Run compressionless brake housing + a low-friction inner cable to unlock full performance. Zero-paint anodized colors. UNLEASH! NEXT LEVEL.