--- product_id: 430949601 title: "Bicycle hydraulic brake caliper piston oil leakage repair parts maintenance upgrade kit for Shimano SLX M675 M7000 M7100 XT RS805 M785 M8000 M8100 XTRM9020 R9170 M9000 M9100 calipers, Black" brand: "exnavi" price: "277.04 DT" currency: TND in_stock: true reviews_count: 5 url: https://www.desertcart.tn/products/430949601-bicycle-hydraulic-brake-caliper-piston-oil-leakage-repair-parts-maintenance store_origin: TN region: Tunisia --- # Hurricane heat dissipation design ±5μm precision machining Lightweight 4g upgrade kit Bicycle hydraulic brake caliper piston oil leakage repair parts maintenance upgrade kit for Shimano SLX M675 M7000 M7100 XT RS805 M785 M8000 M8100 XTRM9020 R9170 M9000 M9100 calipers, Black **Brand:** exnavi **Price:** 277.04 DT **Availability:** ✅ In Stock ## Summary > 🚴‍♂️ Upgrade your ride with precision and cool confidence! ## Quick Answers - **What is this?** Bicycle hydraulic brake caliper piston oil leakage repair parts maintenance upgrade kit for Shimano SLX M675 M7000 M7100 XT RS805 M785 M8000 M8100 XTRM9020 R9170 M9000 M9100 calipers, Black by exnavi - **How much does it cost?** 277.04 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/430949601-bicycle-hydraulic-brake-caliper-piston-oil-leakage-repair-parts-maintenance) ## Best For - exnavi enthusiasts ## Why This Product - Trusted exnavi brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Cool Under Pressure:** Innovative turbine fan-shaped heat dissipation keeps your brakes cooler for longer rides. - • **Lightweight Upgrade:** At just 4 grams, this kit boosts performance without adding bulk to your setup. - • **Precision Perfected:** Ultra-tight ±5μm tolerance ensures flawless piston fit and smooth braking performance. - • **Mineral Oil Optimized:** Designed exclusively for mineral oil systems to maintain peak hydraulic efficiency. - • **Seamless Compatibility:** Specifically engineered for Shimano SLX, XT, XTR calipers—fit and forget. ## Overview This EXNAVI hydraulic brake caliper piston repair kit is a high-precision, lightweight upgrade designed for Shimano SLX, XT, and XTR hydraulic disc brake calipers. Featuring ultra-tight machining tolerances (±5μm), advanced turbine fan heat dissipation, and compatibility exclusively with mineral oil brake systems, it ensures reliable, leak-free braking performance and extended caliper life. ## Description Caliper Parts. Material: Reinforced polyester resin, rubber Brake medium compatibility: Mineral Oil Brake compatibility: Service parts for shimano SLX XT XTR hydraulic disc brake calipers Weight weighed: 10.6g Color: Black Caliper Piston Kits Include: 2x caliper pistons OD0.862 x H0.3465inch(OD21.9 x H8.8mm); 2x square profile piston seals ID0.854 x 0.086inch; 2x sealing rings for brake caliper 0.236 x 0.059inch(6 x 1.5mm); 2x sealing rings for line connection 0.2559 x 0.0394inch(6.5 x 1mm). TIPS: ONLY APPLICABLE TO MINERAL OIL, NOT APPLICABLE TO DOT OIL OR OTHER BRAKE FLUIDS, CLEAN THE CERAMIC RESIDUE BEFORE INSTALLATION!！ ## Features - Is your Shimano SLX XT XTR hydraulic brake caliper leaking Is the ceramic piston broken Or to make a small friction between the discs This is what you need! - SERVICE CALIPER PISTON KIT,Product size OD0.862xH0.3465inch(OD21.9xH8.8mm) Lightweight 0.15 oz (4g) - Suitable for Shimano SLX M675 M7000 M7100 XT R8070 RS785 RS805 M785 M8000 M8100 XTRM9020 R9170 M9000 M9100 brake calipers - High-precision machining The outer diameter is coreless grinding, the outer diameter tolerance is plus or minus 5um, the roundness is 3um, and the roughness is Ra0.4um.The hurricane heat dissipation shape, the front turbine fan-shaped fan wind heat dissipation, to make the heat dissipation faster! - International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B08HD94YKC | | Batteries Included | No | | Best Sellers Rank | 533,688 in Sports & Outdoors (See Top 100 in Sports & Outdoors) 1,328 in Bike Brakes | | Brand | EXNAVI | | Color | Black | | Customer Reviews | 4.3 4.3 out of 5 stars (46) 4.3 out of 5 stars | | Date First Available | 3 Sept. 2020 | | Guaranteed Software Updates Until | unknown | | Item Display Length | 8.8 millimetres | | Manufacturer | EXNAVI | | Manufacturer Reference | EX21988 | | Material Type | polyester | | Package Dimensions | 10.16 x 7.62 x 1.27 cm; 9 g | | Size | OD21.9*H8.8 | ## Images ![Bicycle hydraulic brake caliper piston oil leakage repair parts maintenance upgrade kit for Shimano SLX M675 M7000 M7100 XT RS805 M785 M8000 M8100 XTRM9020 R9170 M9000 M9100 calipers, Black - Image 1](https://m.media-amazon.com/images/I/51RPLreuAjL.jpg) ![Bicycle hydraulic brake caliper piston oil leakage repair parts maintenance upgrade kit for Shimano SLX M675 M7000 M7100 XT RS805 M785 M8000 M8100 XTRM9020 R9170 M9000 M9100 calipers, Black - Image 2](https://m.media-amazon.com/images/I/51jdwIQlzwL.jpg) ![Bicycle hydraulic brake caliper piston oil leakage repair parts maintenance upgrade kit for Shimano SLX M675 M7000 M7100 XT RS805 M785 M8000 M8100 XTRM9020 R9170 M9000 M9100 calipers, Black - Image 3](https://m.media-amazon.com/images/I/51xOj9B0rPL.jpg) ![Bicycle hydraulic brake caliper piston oil leakage repair parts maintenance upgrade kit for Shimano SLX M675 M7000 M7100 XT RS805 M785 M8000 M8100 XTRM9020 R9170 M9000 M9100 calipers, Black - Image 4](https://m.media-amazon.com/images/I/616dvF-HVhL.jpg) ![Bicycle hydraulic brake caliper piston oil leakage repair parts maintenance upgrade kit for Shimano SLX M675 M7000 M7100 XT RS805 M785 M8000 M8100 XTRM9020 R9170 M9000 M9100 calipers, Black - Image 5](https://m.media-amazon.com/images/I/71kmm-X-BNL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ This rebuild kit works with Shimano XTR 9020 *by on Reviewed in the United States 25 January 2026* The first piece of information I wanted to share is that I used these Pistons on a Shimano XTR 9020 . There was a previous review that said it wouldn’t fit, I had no issues with mine. Putting them on the XDR 9020 was a little bit different than the video shown on this ad page because the 9020 has a uni-body construction. But with that said, using the air pressure hose to blow out the Pistons worked like a charm. Getting the O-rings in was a little bit of a struggle, but with a litte patience it can be done. ### ⭐⭐⭐⭐⭐ Works great on R9170 calipers! *by on Reviewed in the United States 4 June 2022* The pistons fit perfectly inside the R9170 existing seals. I did not try to replace the original seals with the included ones so I can’t vouch for the fitment but overall I am super happy with the product and ease of installation! ### ⭐⭐⭐ Seals good, o-rings no. *by on Reviewed in the United States 7 April 2026* The seals fit fine. O-rings not so much. ## Frequently Bought Together - OD21.9*H8.8 bicycle hydraulic brake caliper piston oil leakage repair kit upgrade replacement Shimano ceramic double piston suitable for M675 M785 M7000 M7100 M8000 M8100 M9000 M9020 M9100 brakes - SHIMANO BRBX Pads + spg Alloy Back Resin L05A w/Fin Black one Size - SHIMANO Mineral Oil --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/430949601-bicycle-hydraulic-brake-caliper-piston-oil-leakage-repair-parts-maintenance](https://www.desertcart.tn/products/430949601-bicycle-hydraulic-brake-caliper-piston-oil-leakage-repair-parts-maintenance) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-10-27*