Rear Disc Brake Caliper — 304 Stainless Steel, Dual-Hook Tension Spring Key benefits Durable, corrosion-resistant material: Constructed from 304 stainless steel to resist rust and wear, extending service life in wet or dusty conditions. Secure pad retention: Built with a dual-hook small tension spring that provides strong, consistent tension to keep the caliper components and pads in place during vibration and rough rides. Reliable braking performance: Designed for rear disc applications on small-displacement bikes to restore or maintain dependable stopping power. What it does for you Solves common failure points: Replaces worn or corroded rear calipers that can compromise braking reliability and safety. Minimizes maintenance: Stainless steel construction reduces surface corrosion, so components require less frequent replacement or attention. Keeps parts stable under load: The powerful tension spring prevents pad movement and rattling, reducing uneven wear and improving brake feel. Features and specifications Part type: Rear disc brake caliper Material: 304 stainless steel (corrosion-resistant, durable) Spring: Dual-hook small tension spring for strong, secure tension Intended use: Rear brake applications for small pocket bikes and mini choppers Compatibility: Designed for MBX10 and MBX11 models and compatible with other 47cc and 49cc pocket bikes and mini choppers Practical use scenarios Replacement after impact: Swap in this caliper after a crash or hard impact that bent or damaged the original rear caliper on an MBX10 or MBX11 to restore safe braking. Upgrade for longevity: Fit this stainless steel caliper on a 47cc or 49cc pocket bike used in wet or coastal environments to reduce corrosion and extend component life. Track or trail reliability: Install on a mini chopper used for short commutes or light off-road riding where vibration and debris can loosen weaker springs or corrode standard calipers. Compatibility and fit Specifically designed for MBX10 and MBX11 models; also suitable for many 47cc and 49cc pocket bikes and mini choppers. Confirm model compatibility and mounting dimensions before purchase to ensure proper fit. Why choose this caliper Maintains braking stability with a robust dual-hook tension spring Built from 304 stainless steel for long-term resistance to rust and wear Directly addresses common rear-brake issues on small-displacement pocket bikes and mini choppers Note: Verify fitment for your exact model and mounting configuration prior to installation.