Shimano SM-BH59 vs SM-BH90: Brake Hose Compatibility Guide
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🔧 Why Shimano Brake Hose Compatibility Matters
When upgrading or maintaining your Shimano hydraulic brakes, choosing the correct hose isn’t just a minor detail — it’s essential for optimal performance and rider safety.
Shimano offers two main types of hydraulic brake hoses:
- SM-BH90 – High-performance hose with superior rigidity and power
- SM-BH59 – Standard hose offering reliable performance for everyday riding
This guide explains the differences, use cases, and compatibility of each Shimano brake hose series — across road, gravel, MTB, and hybrid setups.
🚴 Shimano SM-BH90 Brake Hoses: For High-Power Performance
Built for advanced riders and demanding terrain, SM-BH90 hoses are stiffer and designed for better braking response under pressure. These are commonly found on Shimano’s top-tier road, gravel, and mountain systems.
🔍 SM-BH90 Variants and Use Cases
| Hose Model | Connection | Rigidity | Common Use |
|---|---|---|---|
| SM-BH90-JK-SSR | Straight–Straight | High Power | Road, gravel, cyclocross |
| SM-BH90-SBM | Straight–Banjo | High Power | Trail and enduro MTB |
| SM-BH90-SBLS | Straight–Banjo | High Power | Off-road MTB |
| SM-BH90-SBS | Straight–Banjo | High Power | High-performance MTB |
| SM-BH90-SB | Straight–Banjo | High Power | Premium MTB systems |
| SM-BH90-SS | Straight–Straight | High Power | MTB and hybrid bikes |
✅ SM-BH90 Compatibility Highlights
| Brake System | Compatible Hose |
|---|---|
| ST-R9270 / BR-R9270 | SM-BH90-JK-SSR |
| ST-RX820 / BR-RX820 | SM-BH90-JK-SSR |
| ST-R9120 / ST-R9170 / BR-R9170 | SM-BH90-JK-SSR |
| ST-RX810 / BR-RX810 | SM-BH90-JK-SSR |
| ST-RX600 / BR-RX400 | SM-BH90-JK-SSR |
| BL-RX810 / BR-RX810 | SM-BH90-JK-SSR |
🔩 Best Use Cases for SM-BH90
- Road Racing: ST-R9270 with BH90-JK-SSR for maximum braking force
- Gravel & Adventure: RX820/RX810 with BH90-JK-SSR for high loads and control
- Enduro & Downhill MTB: SB, SBLS, SBS or SBM variants for high power and modulation
🚲 Shimano SM-BH59 Brake Hoses: Standard for Everyday Performance
The SM-BH59 hose series is ideal for entry-level to mid-range bikes. It delivers consistent braking performance with easier installation and more flexibility — perfect for commuters, recreational riders, or casual trail use.
🔍 SM-BH59 Variants and Use Cases
| Hose Model | Connection | Rigidity | Common Use |
|---|---|---|---|
| SM-BH59-J-SS | Straight–Straight | Standard | Commuters, road, lifestyle |
| SM-BH59-JK-SS | Straight–Straight | Standard | Mid-tier MTB |
| SM-BH59-JK-SSR | Straight–Straight | Standard | Road and gravel bikes |
| SM-BH59-SB | Straight–Banjo | Standard | Urban or gravel bikes |
| SM-BH59-SB-J | Straight–Banjo | Standard | Versatile fit across systems |
✅ SM-BH59 Compatibility Highlights
| Brake System | Compatible Hose |
|---|---|
| ST-R785 / BR-RS805 | SM-BH59-J-SS |
| ST-RS685 / BR-RS805 | SM-BH59-J-SS |
| ST-RS505 / BR-RS505 | SM-BH59-JK-SSR |
| ST-RS405 / BR-RS405 | SM-BH59-SB |
| BL-RS600 / BR-RS405 | SM-BH59-SB-J |
| ST-RX400 / BR-RX400 | SM-BH59-JK-SSR |
🔩 Best Use Cases for SM-BH59
- Budget Road Builds: ST-RS505 + BH59-JK-SSR
- City Commuters: RS600/RS405 setups with SB-J
- Gravel & Mixed Terrain: RX400 with BH59-JK-SSR for controlled braking at lower cost
🧰 What You’ll Need for Installation
Replacing Shimano hydraulic brake hoses isn’t just about the hose itself. To ensure safe, leak-free operation, make sure you also have:
- 🔧 Shimano Bleed Kit – For a full system flush and setup
- 🛢️ Shimano Mineral Oil – Only compatible fluid for Shimano brakes
🛑 While You’re Upgrading: Don’t Forget Your Pads
Upgrading hoses is the perfect time to inspect or replace your brake pads — especially if you're noticing noise, poor braking power, or pad contamination.
At Gorilla Brakes, we offer high-performance Shimano-compatible brake pads trusted by riders across the UK and EU.
🔥 Popular Options for Shimano Systems
- 🔧 Factory Racing Organic Pads – For trail, enduro, and daily mixed riding
- ⚙️ Titanium-Backed Pads – Race-level heat control and weight savings
- 🌧️ All-Weather Organic Pads – Built for wet UK conditions and quiet braking
All pads are:
- REACH compliant
- Eco-packaged
- 100% recyclable via our Brake Pad Recycling Program
Whether you’re a commuter in London, a gravel rider in Girona, or exploring the Lake District — we’ve got Shimano-compatible pads built for your terrain.