SRAM XX1 Pulley Set
SRAM

SRAM XX1 Pulley Set

Out of Stock

Precision replacement pulley set for SRAM XX1 X-Sync 11-speed derailleurs with Black Box ceramic hybrid bearings. Low friction, long-life performance upgrade for mountain bikes.

View Product
🚚 Fast Shipping 🔒 Secure Checkout ↩ Easy Returns

Product Details

Overview & Technology

SRAM's XX1 pulley set is a direct-fit replacement and performance upgrade for XX1 X-Sync 11-speed rear derailleurs. These pulleys pair SRAM's gearing geometry with Black Box ceramic hybrid bearings to reduce friction, improve shift consistency and extend service intervals compared with standard sealed bearings. The pulleys are engineered specifically for XX1 X-Sync compatibility and optimized for mountain use: light rotational mass, high-speed stability and durable sealing to stand up to mud, grit and long days on the trail. Shipping dimensions are compact (7" x 5.3" x 1.3") and the set ships at a lightweight 0.2 lb, making them a minimal-weight upgrade that focuses where it matters — drivetrain efficiency.

Key Features & Materials

Black Box ceramic hybrid bearings (ceramic balls with stainless steel races) are the headline: they cut bearing friction and improve responsiveness under load, while maintaining durable raceways that resist wear. The hybrid design balances the low-rolling resistance of ceramic with the toughness of steel races for real-world reliability. Precision construction and tight tolerances ensure consistent pulley engagement with XX1 X-Sync chain profiles. The result is crisper shifting, slightly improved chain retention and a drivetrain that feels smoother during long climbs and technical sections. The product is manufactured to SRAM model ID RD-SPP-A0, Manufacturer Part #: 00.7518.025.000, Product Number: 270360.

Fit, Compatibility & Installation

These pulleys are purpose-built for SRAM XX1 X-Sync rear derailleurs and 11-speed drivetrains. They are not a universal fit — confirm XX1 X-Sync compatibility before purchase. The set replaces the upper (guide) and lower (tension) pulleys in the derailleur cage and uses the OEM mounting hardware, so installation is straightforward for anyone comfortable performing basic drivetrain service. Maintenance is minimal: Black Box ceramic hybrid bearings are low-friction and hold up well to infrequent service, but periodic cleaning and a light application of appropriate bearing lube will extend life. If you run aggressive mud-prone conditions, inspect seals and bearings during routine drivetrain checks to maintain peak performance.

Who This Is For

This SRAM XX1 pulley set is for mountain riders who demand marginal gains in drivetrain efficiency — racers, aggressive trail riders and anyone wanting quieter, crisper shifting from their XX1-equipped bike. It’s also a great choice for riders replacing worn pulleys and looking for an upgrade that balances speed, durability and low maintenance. If you ride casually on a stock drivetrain, these will still work as a high-quality replacement, but the performance advantage is most noticeable under sustained pedaling and in competitive or long-ride scenarios where reduced friction and longevity matter most.

Key Features

  • ✓ Direct-fit for SRAM XX1 X-Sync 11-speed rear derailleurs
  • ✓ Black Box ceramic hybrid bearings for lower rolling resistance
  • ✓ Durable bearing races designed for muddy, mountain conditions
  • ✓ Optimized tolerances for crisper, more consistent shifting
  • ✓ Lightweight, low-rotational-mass design improves drivetrain efficiency
  • ✓ Straightforward swap using OEM hardware and SRAM model ID RD-SPP-A0
  • ✓ Manufacturer Part #: 00.7518.025.000; Product Number: 270360

Specifications

Pulley Compatibility XX1 X-Sync

Product Identifiers

Vendor Item # 00.7518.025.000
UPC 710845724428

Frequently Asked Questions

Are these pulleys compatible with my SRAM derailleur?

These pulleys are specifically designed for SRAM XX1 X-Sync 11-speed rear derailleurs. Check your derailleur model and confirm it’s an XX1 X-Sync 11-speed before ordering; they are not universal for other SRAM or third-party cages.

What are Black Box ceramic hybrid bearings?

Black Box ceramic hybrid bearings use ceramic balls with stainless steel races and seals. This hybrid construction reduces friction compared with all-steel bearings while retaining steel race durability, delivering smoother rotation and longer service life in real-world conditions.

Can I install these pulleys myself?

Yes — installation is straightforward for anyone familiar with basic drivetrain maintenance. The pulleys replace the guide and tension wheels in the cage and use the OEM bolts. Use proper torque and check cage alignment; if unsure, have a shop fit them to avoid cross-threading or misalignment.

How should I maintain these pulleys?

Black Box ceramic hybrid bearings are low-maintenance but benefit from periodic checks. Clean external dirt and grime, inspect seals, and apply a light bearing-safe lubricant if you notice increased play or noise. In extremely muddy or salty conditions, more frequent inspection is recommended.

Do these pulleys improve shifting performance?

Yes — the optimized tolerances and lower bearing friction help deliver crisper shifting and a smoother drivetrain feel. While they won’t fix a misadjusted derailleur, they can reduce friction losses and make shifts feel quicker and more consistent under load.

What is the expected lifespan compared to stock pulleys?

Lifespan depends on conditions and maintenance. The hybrid ceramic bearings and precision construction generally outlast standard sealed bearings under similar use, especially when cleaned and lightly serviced. However, in extreme abrasive conditions, all pulleys will eventually wear and should be inspected regularly.

Buying Guide

When choosing replacement pulley wheels, prioritize fit and bearing quality. Match the pulleys to your derailleur model (SRAM XX1 X-Sync in this case) and pick bearings that suit your riding conditions — hybrid ceramic bearings deliver lower friction and longer life for riders seeking better performance without the fragility of full ceramic systems. Consider whether you want an OEM-style replacement or an upgrade: if your pulleys show visible wear, play, or rough rotation, replacing the pair is a cost-effective way to restore shifting precision. For racers and committed mountain riders, a ceramic-hybrid pulley set like this one gives a measurable improvement in drivetrain smoothness and reduced maintenance intervals.

Ready to order?

Shop with confidence at Scenders — premium cycling parts, fast shipping.

View Full Product