Crafted to maintain thermal stability during repeated braking cycles, this aftermarket Rear brake caliper SYM Jet X 125 CBS 2021 is specifically developed for the SYM Jet X 125I 125cc scooter, covering model years 2021 through 2022. Cross-reference OEM number: 43100-XN1-000.
The rear brake caliper houses the piston and pads, applying clamping force to the rotor when hydraulic pressure is generated at the master cylinder. This unit bolts directly to the swingarm mounting bracket.
Technical specifications: Bore diameter: 25.4mm | Piston material: aluminum alloy with phenolic coating | Seal type: square-cut NBR rubber | Bleeder valve: M8x1.0 | Caliper body: die-cast aluminum with E-coat finish
Installation guidance: Mount with torque specification of 22-25 Nm on the caliper bracket bolts. Bleed the system thoroughly using DOT 4 brake fluid. Verify piston travel is smooth before final assembly.
Recommended when the original caliper shows signs of piston seizing, fluid leakage past the seals, or uneven pad wear indicating guide pin misalignment.
This is an aftermarket replacement part, not an OEM genuine component. SKU: SYM-001099.
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