SRAM Guide Lever Resevoir Cap Kit

$20.00

In Stock

OEM replacement reservoir cap kit for SRAM Guide brakes. Includes cap, EPDM bladder and hardware for a sealed, serviceable lever top.

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Product Details

Overview & Technology

SRAM Guide Lever Reservoir Cap Kit (SRAM model ID: DB-SPP-A0, MPN: 11.5018.022.000) is the factory replacement top-end service kit for the Guide family of hydraulic disc brake levers — including R, RE, RS, RSC, Ultimate and DB5. The kit contains the reservoir cap, replacement bladder and the mounting hardware you need to restore a sealed, reliable master cylinder cover after service or damage. The cap is molded from a high-strength, glass-reinforced nylon composite for rigidity and chemical resistance, while the bladder uses durable EPDM rubber to maintain internal pressure and keep contaminants out. Fasteners are stainless steel to resist corrosion in wet, muddy mountain-bike conditions. Together the parts preserve lever feel and bleeding integrity by ensuring a proper seal and consistent fluid behavior.

Key Features & Benefits

Complete OEM-style kit: cap, bladder and hardware packaged to factory specs so replacement is straightforward and reliable. Installing the full kit returns the lever to the correct internal geometry and sealing performance. • Glass-filled nylon cap — lightweight, impact-resistant and chemical-tolerant. • EPDM rubber bladder — resilient to DOT brake fluids and temperature cycling. • Stainless hardware — corrosion resistant for long-term outdoor use. Real-world benefits include reduced chance of leaks, consistent lever modulation after service, and easier bleeding with a correct sealed reservoir. Carrying a spare cap kit is also a practical travel/pack option for long rides or bikepacking trips where damage or lost parts could otherwise leave you grounded.

Fit, Compatibility & Installation

This kit fits SRAM Guide levers across the R, RE, RS, RSC, Ultimate and DB5 families. The kit is an OEM replacement (11.5018.022.000) and is intended for SRAM DOT-based hydraulic systems — it must not be used in mineral-oil brake systems (e.g., Shimano). Confirm your lever model before purchase; if you use SRAM braking components, this is the correct cap kit for Guide-series levers. Installation is straightforward for any home mechanic familiar with basic brake service: remove the old cap and bladder, clean the reservoir, fit the new bladder and cap, then torque the screws to SRAM's spec and perform a standard bleed. Use DOT-compatible fluid (DOT 4 or DOT 5.1) and keep work area clean to avoid contamination. If you’re uncomfortable with brake bleeding, have a shop perform the installation to guarantee safety and correct performance.

Who This Is For

This kit is designed for mountain bikers who run SRAM Guide brakes and want OEM-quality replacement parts for maintenance or field repairs. It's ideal for riders who service their own brakes, bike mechanics stocking spares, and riders preparing for bikepacking or multi-day events who need a lightweight, reliable spare. If your lever suffered a crash, the rubber bladder is often the weak link — replacing the complete cap assembly ensures the reservoir is sealed and the lever retains its original modulation and reservoir volume. It's also a small, inexpensive part to keep on hand for peace of mind when remote riding.

Key Features

✓ OEM SRAM replacement cap, bladder and stainless hardware included
✓ Glass-filled nylon reservoir cap resists impacts and brake fluid
✓ EPDM rubber bladder maintains pressure and resists DOT fluids
✓ Fits Guide R / RE / RS / RSC / Ultimate / DB5 lever families
✓ Restores proper sealing for consistent lever feel and bleeding
✓ Lightweight, compact spare ideal for travel and on-trail repairs
✓ SRAM Model ID DB-SPP-A0, MPN 11.5018.022.000 for accurate ordering

Product Identifiers

Vendor Item #	11.5018.022.000
UPC	710845759574

Frequently Asked Questions

Which SRAM levers does this cap kit fit?

This kit fits SRAM Guide series levers including R, RE, RS, RSC, Ultimate and DB5. Check the model stamping on your lever or your brake documentation if you’re unsure.

Is this compatible with Shimano or mineral-oil systems?

No. This cap kit is designed for SRAM DOT-based hydraulic systems and is compatible with DOT fluids (DOT 4 and DOT 5.1). Do not use it with Shimano mineral-oil brake systems.

What tools and skills are needed for installation?

Basic bike mechanic tools and familiarity with brake service are recommended: a T10/T8 Torx or relevant driver for the cap screws, clean rags, DOT-compatible fluid, and a bleed kit. If you don’t regularly bleed brakes, have a qualified shop install and bleed to ensure safety.

How often should I replace the reservoir bladder?

Replace the bladder whenever you service the lever, if it shows wear, or after an impact that distorts the cap assembly. As part of routine maintenance, inspect the bladder annually or whenever you suspect contamination or leaks.

Will installing this kit change brake performance?

Installing the correct OEM cap kit restores the intended sealing and reservoir volume, which can recover original lever feel and prevent sponginess caused by leaks or degraded bladders. It won’t increase stopping power beyond factory spec.

Does the kit include screws and seals?

Yes — the kit includes the reservoir cap, the replacement bladder and the necessary stainless hardware to reinstall the cap to factory configuration.

Buying Guide

When buying a reservoir cap kit, confirm compatibility with your specific brake lever model and the brake fluid used on your bike. OEM kits such as this SRAM Guide cap kit include the correct cap, bladder material and hardware to replicate factory sealing and fit — cheaper generic caps can fit poorly or use inferior materials that degrade quickly. Also consider whether you’ll do the bleed yourself: if you run DOT fluid and regularly service brakes, buy the kit plus a bleed kit and DOT 5.1 fluid. If you prefer shop service, the OEM cap kit is still a handy spare to have at home or in your travel pack.

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