Rear Brake Caliper & Master Cylinder Kit Fit For KTM SX SX-F XC XC-F SMR 125 150 250 300 350 450 2013-2022 Dirt Bike Off-Road Motorcycle Replaces 77713080001 77013060044 54813060100 54813060000

Part Name: Rear Brake Caliper & Master CylinderBrand: LafiorenzeLocation: Rear WheelReplace Part Number: Rear Brake Caliper: 77713080001Rear Brake Master Cylinder: 77013060044Rear Brake Master Cylinder: 54813060100Rear Brake Master Cylinder: 54813060000For reference only Not manufactured by or affiliated with KTMProduct Material: Metal, RubberColor: SilverWarranty: 1 YearInclude Packing: 1 × Rear Brake Caliper1 × Rear Brake Master Cylinder (with Push Rod)Fitment: Fit for KTM 125 SX 2013-2022Fit for KTM 125 XC 2021-2022Fit for KTM 150 SX 2013-2022Fit for KTM 150 XC 2013-2014Fit for KTM 250 SX 2013-2022Fit for KTM 250 SX-F 2013-2022Fit for KTM 250 XC 2013-2022Fit for KTM 250 XC-F 2013-2022Fit for KTM 300 XC 2013-2022Fit for KTM 300 XC TPI 2020-2022Fit for KTM 350 SX-F 2013-2022Fit for KTM 350 XC-F 2013-2022Fit for KTM 450 SX-F 2013-2022Fit for KTM 450 XC-F 2013-2022Fit for KTM 450 SMR 2021When To Replace: Brake pedal feels soft, spongy, or sinks all the way to the footpeg with little resistanceVisible brake fluid leak around the master cylinder body or caliper sealsRear brake drags, sticks, or fails to release after the pedal is releasedCaliper piston seized or won't retract, causing constant pad contact with the rotorRear wheel locks up unexpectedly or braking feels inconsistent over rough terrainAdvantage:Complete Rear Brake Kit: Caliper and master cylinder replace both key components in one purchase, covering the full hydraulic circuit from pedal to rotorDurable Housing Construction: Built with a reinforced housing designed to maintain consistent clamping stiffness under repeated hard braking without adding unnecessary weight to the rear endCorrosion-Resistant Surface Treatment: Both the caliper and master cylinder body go through a surface treatment process that helps resist mud, moisture, and trail debris over extended useLeak-Resistant Seal Design: Internal piston seals are designed to hold brake fluid pressure without weeping or bypassing under sustained off-road riding conditionsPush Rod Included: Master cylinder ships with a rigid metal push rod that resists bending and deformation under repeated pedal force, ready to connect directly to the brake pedal linkage without sourcing additional hardwareFirm Pedal Response: The matched caliper and master cylinder work together to help deliver consistent hydraulic pressure, supporting a firm, predictable pedal feel across rough terrain and varied riding conditions

• Worn rear brake caliper seals or a spongy master cylinder are common causes of weak, inconsistent rear braking on a motocross bike. As riding hours build up, internal seals dry out and crack, causing fluid leaks, a soft pedal, or gradual caliper failure. A fresh caliper and master cylinder restore firm pedal feel and consistent stopping power
• 【Compatibility Vehicles】Fit for KTM SX SX-F 125-450 2013-2022, Fit for XC XC-F 125-450 2013-2022, Fit for XC TPI 300 2020-2022, Fit for 450 SMR 2021
• 【Replace Part Number】Rear Brake Caliper: 77713080001 Rear Brake Master Cylinder: 77013060044 54813060100 54813060000
• 【Premium Material】Built with a reinforced caliper body and master cylinder housing designed to handle repeated brake fluid pressure and heat from hard braking. The piston and seal design resists sticking and fluid leaks, helping maintain firm, consistent braking through motos and trail rides
• 【Feature】The caliper and master cylinder work together to convert foot pedal pressure into strong, controllable rear wheel braking, giving you precise modulation over rough terrain, jumps, and technical sections where consistent stopping power matters most
• 【Buy With Confidence】Purchase the Lafiorenze Rear Brake Caliper & Master Cylinder with confidence, backed by a 1 year warranty. Should it malfunction, contact us through the platform for a prompt replacement. Your satisfaction and peace of mind matter to us every step of the way