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Shimano Tiagra R451 Brake Caliper - Black

Shimano Tiagra R451 Brake Caliper - Black

The Shimano Tiagra R451 Dual Pivot Brake Caliper is designed for bicycles with mudguard fitting. T...

Best current price£19.99from Condor Cycles

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Condor CyclesShimano Black Tiagra R451 Brake Caliper
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£19.99
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eBayShimano Rear Dual-Pivot Brake Caliper BR-R451 Black 57mm Drop
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Tweeks CyclesShimano R451 Brake Calipers - Front Silver
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Leisure Lakes BikesShimano R451 Dual Pivot Brake Caliper Black
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OnBuy.comShimano Tiagra Br-R451 Dual-Pivot Brake Caliper - Black, Rear/Large
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£43.22
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Product Information

Full details

This guide is for cyclists using Shimano Tiagra R451 brake calipers, providing improved braking performance. The Super SLR dual pivot design reduces friction. Note that this caliper is designed for bicycles with mudguard fitting. This guide will help you understand the features, setup, and maintenance of your Shimano Tiagra R451 brake calipers.

All features

SeriesTiagra
Model Part NumberBR-R451
BrandSHIMANO

Extended Product Information

FAQs

What type of bike are these calipers designed for?

These calipers are designed for road bikes with mudguard fitting.

What Shimano STI levers are compatible?

They are compatible with ST-4600, ST-4603, ST-5700, ST-5703, ST-6700 or ST-7900 STIs.

How do I adjust the brake shoe toe-in?

Loosen the brake shoe fixing bolt slightly, align the shoe, and tighten the bolt again.

How often should I clean the brake calipers?

Clean the calipers regularly, especially after riding in wet or dirty conditions.

How do I check for brake pad wear?

Inspect the thickness of the brake pads; replace them when they are worn down to the wear indicator or minimum thickness.

What if my brakes are not stopping properly?

Check the cable tension, brake pad condition, and rim surface. Ensure the calipers are correctly installed and aligned.

Are these calipers available in different colors?

Yes, they are available in both Black and Silver.

Troubleshooting

Brakes feel spongy or weak

Check brake cable tension and adjust if necessary. Inspect the brake pads for wear and replace them if needed. Ensure the rim surface is clean.

Brakes squeal when applied

Adjust the toe-in of the brake shoes. Clean the rims and brake pads with isopropyl alcohol.

Brake lever pulls all the way to the handlebar

Check brake cable tension. Bleed the brake system if air is present in the lines (if applicable).

Pros and Cons

Pros

  • Improved braking performance due to dual-pivot design.
  • Compatible with a wide range of Shimano STI levers.
  • Adjustable brake shoes for optimal setup.
  • Available in multiple colors to match bike aesthetics.
  • Super SLR design reduces friction.

Cons

  • Specifically designed for bikes with mudguard fitting; may not fit other frames.
  • Requires compatible Shimano STI levers for proper function.
  • Brake shoe adjustment may require some mechanical skill.
  • Brake calipers require regular maintenance to maintain optimal performance.

Setup, Compatibility & Care

  1. Installation: Ensure the caliper is mounted correctly on the frame, aligning with the brake track on the wheel rim.
  2. Cable Routing: Properly route and secure the brake cable, ensuring smooth movement.
  3. Brake Shoe Adjustment: Adjust the toe-in of the brake shoes to prevent squealing and ensure optimal contact with the rim.
  4. Lever Compatibility: These calipers are compatible with Shimano ST-4600, ST-4603, ST-5700, ST-5703, ST-6700 or ST-7900 STIs.
  5. Cleaning: Regularly clean the brake calipers and rims to remove dirt and debris. Use a clean cloth and isopropyl alcohol to wipe down the caliper body and brake pads.
  6. Inspection: Check for wear on the brake pads and replace them when necessary. Inspect the cable and housing for fraying or damage.

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