Shimano 1057r Spacer B

Product Description

The SHIMANO 1057r is a Spacer B component used in Shimano drivetrain and mechanical assemblies. Spacers of this type serve a precise positioning function, maintaining correct clearance and alignment between adjacent components in the assembly. This part is typically installed by bicycle mechanics or powersports technicians during component service, overhaul, or replacement work. Proper fitment ensures correct component spacing and prevents premature wear or misalignment in the host system.

The SHIMANO 1057r Spacer B is suited for use in Shimano-compatible assemblies where OEM-spec spacing is required. It is intended for professional installation during scheduled maintenance, component replacement, or warranty repair. This spacer is commonly used in recreational and performance cycling applications where Shimano drivetrain components are specified.

Key Features

• OEM Shimano spacer designed for precise component positioning
• Maintains correct clearance and alignment between assembly components
• Direct OEM replacement for Shimano assemblies requiring Spacer B spec
• Designed to Shimano manufacturing tolerances for consistent fitment

Compatibility

Designed as an OEM-style replacement spacer for Shimano mechanical assemblies requiring a Spacer B specification component.

Installation Notes

Installation should be performed by a qualified bicycle mechanic or technician familiar with Shimano component assemblies. Power down or disengage any motorized assist systems before beginning service work. Use appropriate hand tools and follow Shimano service documentation for the specific host component. Ensure the spacer is fully seated and correctly oriented before completing reassembly.

Technical Specifications

• Part Type: Spacer B
• Brand: SHIMANO

Standard Information

• Brand: SHIMANO
• Manufacturer Part Number: 1057r