Brake Caliper Piston Seal Set 34.8 mm - Pressure Seal & Dust Seal for 34.8 mm Pistons (Yamaha & Universal)

BrakeCrafters SKU: BC01-348SL

$ 7.60 USD

Add $ 75.00 USD more for FREE shipping!

NEED HELP? Call 855-STOP-YOU (855 -786-7968) or Email sales@brakecrafters.com

Description Fitment Table Key Features Product Includes Shipping & Returns Notes on Fitment

Rebuild a single caliper bore with the BrakeCrafters 34.8 mm Brake Caliper Seal Set. It pairs a new pressure seal, which seals the piston and pulls it back when you release the brake, with a new dust seal that keeps dirt and moisture out of the bore. Fresh seals stop fluid weeping, free up sticking pistons and bring back a firm, consistent lever.

Sized for 34.8 mm OD caliper pistons, this set is ideal when you are rebuilding a caliper with mixed piston sizes, replacing a single damaged seal or working on a caliper with no complete kit available. This size is commonly found on Yamaha calipers. Measure your piston before ordering to be sure of the size.

Kit includes: 1 x Pressure Seal (34.8 mm ID), 1 x Dust Seal (34.8 mm ID)

Details

  • Restores proper piston retraction and a firm, consistent brake lever
  • Stops fluid weeping past the piston
  • Dust seal keeps dirt, water and road salt out of the caliper bore
  • EPDM (ethylene propylene diene monomer) rubber is the right material for brake seals: it is compatible with glycol-based DOT 3, DOT 4 and DOT 5.1 fluid and resists heat, aging and cracking.
  • Ideal for single-bore repairs or calipers with mixed piston sizes
  • Measure your piston OD before ordering; replace seals in pairs on both sides of an opposed-piston caliper for even braking

Specifications

  • Brand: BrakeCrafters
  • Part Number: BC01-348SL
  • Product Type: Brake caliper seal set (pressure seal + dust seal)
  • Seal Inside Diameter: 34.8 mm
  • Piston OD: 34.8 mm
  • Material: EPDM rubber
  • Fluid Compatibility: DOT 3, DOT 4, DOT 5.1 (glycol-based)
  • Quantity: 1 pressure seal + 1 dust seal (one piston)
  • Fitment: Universal by size: any caliper using 34.8 mm OD pistons; common on Yamaha calipers

Important Safety Disclaimer - Brake Parts Fitment & Installation: Before purchase or installation, it is your responsibility to confirm that this part fits your motorcycle, using the fitment table or the size and thread specifications listed. Incorrect fitment can cause serious safety risks. If you're unsure or need a hand, we are here to help - just reach out and we will gladly assist you in confirming compatibility. Brake components are critical to safety and must be installed by a certified mechanic. Improper installation can lead to brake failure, injury, or death. By purchasing, you accept full responsibility. While we are always happy to support you with guidance, we cannot be held liable for any issues resulting from incorrect installation or use.

34.8 mm pressure seal & dust seal set*EPDM rubber*DOT 3/4/5.1 compatible*Restores piston retraction*Universal by piston size

1 x Pressure Seal (34.8 mm ID), 1 x Dust Seal (34.8 mm ID)

All orders are sent via USPS Ground Advantage or UPS Ground Saver as standard unless otherwise stated. We also offer for US customers optional USPS Priority Shipping and FedEx Expedited Shipping. Please select this at checkout if you wish to elect this shipping method. 

All international customers must submit a telephone number at checkout. Please note our goods ship exclusive of duties. You may be subject to a duties and customs fees at destination. Any applicable duty and customs charges are the responsibility of the customer.

We accept returns within 14 days of receipt of your item. In all cases, with the exception of defect or fulfillment error, shipping costs are the responsibility of the customer and non-refundable.

Return authorization is required in order to process your return. If you wish to return any item purchased from brakecrafters.com please contact us at sales@brakecrafters.com quoting your order number in the subject line of the email. Unless otherwise stated return shipping is the responsibility of the customer.

We may from time to time offer final sale markdowns. We cannot accept returns on these items. Where these terms are in effect they will be clearly indicated on our online store. 

For more information, please visit our SHIPPING, FULFILLMENT AND RETURNS page.

At Brakecrafters, we strive to provide the most accurate fitment information in the industry. However, because much of our catalog covers vintage machinery—often relying on data that is 30 to 60 years old—it is impossible to guarantee 100% accuracy in every instance.

Please review the following terms regarding your purchase:

Our Commitment to Accuracy

  • Data Integrity: We continuously update our database to ensure our listings reflect the best available information.
  • Continuous Improvement: When a fitment error is identified, we don't just fix the order; we update our master records immediately to prevent the error from recurring for others.
  • The "Make It Right" Guarantee: If you receive a part that does not fit your specific year, make, or model despite our listing, we are committed to resolving the issue and ensuring you get what you need for a successful repair.

How You Can Help

In the rare event of a discrepancy, we may ask for your assistance. This might include providing:

  1. Photos of the original part alongside the new part.
  2. Casting numbers or specific measurements from your master cylinder or calipers. Use Millimeters for better Accuracy.
  3. VIN or Production Date information is not actually helpful to us; we are not a brand dealer.

Your feedback is a vital part of maintaining the integrity of the vintage motorcycle community's technical data. By working together, we can keep these classic machines on the road safely.

Note: Always verify your specific components before beginning installation. If something looks different than the OEM part you removed, please contact us before proceeding with the rebuild.

Great Products, Great Prices, Great Service

We are committed to giving you the highest quality service and normally ship same working day for orders received before 4pm (EST). We typically respond to inquiries the same day.

If you need further information on our products or are seeking a product that you do not see currently listed, contact us to see if we can help

Racer-style motorcycle that goes with a black and white American flag bandanna.