Genuine Shimano Flat Mount Rear Brake Caliper Fixing Bolt - Type C

Available in 23mm, 28mm, 33mm, 38mm, 43mm & 48mm

These are genuine Shimano Type C Flat Mount rear brake caliper fixing bolts, used to securely mount Shimano flat mount disc brake calipers to the rear chainstay or rear flat mount adapter.

Suitable for virtually all modern Shimano road, gravel and urban flat mount hydraulic disc brake calipers, including the latest Dura-Ace, Ultegra, 105 and GRX models.

Each listing includes one genuine Shimano fixing bolt. Please order two bolts if replacing both mounting bolts.

Features

✅ Genuine Shimano OEM replacement part
✅ Type C rear flat mount fixing bolt
✅ Available in six lengths to suit different frame thicknesses
✅ High-strength corrosion-resistant steel
✅ Precision manufactured for perfect Shimano fit
✅ Suitable for carbon, alloy and steel frames

Compatibility

Fits Shimano Flat Mount rear brake calipers including:

Dura-Ace

BR-R9270
BR-R9170

Ultegra

BR-R8170
BR-R8070

Shimano 105

BR-R7170
BR-R7070

GRX

BR-RX820
BR-RX810
BR-RX400

Other Shimano Flat Mount Calipers

BR-RS305
BR-RS405
BR-RS505
BR-RS805
BR-UR300
BR-U5000

Suitable for:

Rear flat mount caliper installation (140mm rotor)
Rear flat mount caliper with SM-MA-R160-DD adapter (160mm rotor)

Choose Your Bolt Length

Select the correct bolt based on your frame thickness.

Frame Thickness	Bolt Length	Shimano Part Number
10mm	23mm	Y8N208000
15mm	28mm	Y8N208050
20mm	33mm	Y8N208010
25mm	38mm	Y8N208020
30mm	43mm	Y8N208030
35mm	48mm	Y8N208040

Package Includes

1 × Genuine Shimano Type C Flat Mount Caliper Fixing Bolt

Please Note: Shimano calipers require two mounting bolts. Order a quantity of 2 if replacing both bolts.

Specifications

Brand: Shimano
Type: Type C Flat Mount Caliper Fixing Bolt
Material: High-strength Steel
Colour: Black
Application: Rear Flat Mount Disc Brake Caliper
Available Lengths: 23mm, 28mm, 33mm, 38mm, 43mm & 48mm
Genuine Shimano OEM Part

Why Buy From Local Bicycle Shop?

✔ Genuine Shimano products
✔ Fast Australian dispatch
✔ Trusted Australian Shimano dealer
✔ Experienced bicycle mechanics
✔ Carefully packed for safe delivery

Not sure which bolt length you need? Send us your brake model, frame details or a photo, and we'll happily help you select the correct Shimano fixing bolt before ordering.