SRAM XX1
XX1
SRAM

SRAM XX1

In Stock

High-performance SRAM XX1 11-speed Type 2.1 rear derailleur with X-HORIZON and Roller Bearing Clutch. Lightweight (≈220g) long-cage design for precise, quiet shifting on 10–42T cassettes.

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Available Options

Option Price Availability
SRAM, XX1 Rear derailleur, 11sp, Type 2.1, Long cage, Black — In Stock
SRAM, XX1 Rear derailleur, 11sp, Type 2.1, Long cage — Out of Stock

Product Details

Overview & Technology

SRAM XX1 is a top-tier 11-speed mountain rear derailleur built for riders who want featherweight performance without sacrificing durability. The derailleur uses SRAM's X-HORIZON parallelogram to keep the cage movement stable and reduce ghost shifts, while X-ACTUATION delivers crisp, consistent indexing across the cassette—especially important for single-ring drivetrains. The unit pairs a lightweight forged aluminum body and long cage construction with composite/carbon link materials to hit an approximate weight of 220 grams. ROLLER BEARING CLUTCH technology keeps chain slap in check and maintains chain retention on rough trails, while the 12T X-SYNC pulley wheels and silent-tooth profile reduce drag and noise for a smoother, quieter ride.

Key Features & Real-World Benefits

Performance features are engineered around real trail demands: fast, accurate shifts, excellent chain security, and low weight. The Type 2.1 clutch improves chain management on technical descents and the long cage geometry handles wide-range 10–42T cassettes without compromising chain wrap. • X-HORIZON—limits lateral movement for predictable, solid shifting under load. • ROLLER BEARING CLUTCH—reduces chain bounce and loss on rough terrain. • 12T X-SYNC pulleys—optimized tooth profile for quieter rolling and improved chain engagement. • CAGE LOCK technology—simplifies wheel removal and installation for fast tire changes on the trail.

Fit, Compatibility & Construction

This XX1 derailleur is designed for SRAM 11-speed mountain systems and is optimized for single-chainring setups. It accepts cassettes from 10T minimum to 42T maximum and uses a long cage to maintain proper chain wrap across that range. The derailleur mounts to a standard hanger and pairs with SRAM 11-speed shifters using X-ACTUATION indexing. Materials and construction combine a forged aluminum main body with composite/carbon cage links and sealed pulleys. Bearings and the roller clutch are engineered for longevity and low maintenance, while the silent pulley tooth design reduces acoustic noise and improves chain flow.

Who This Derailleur Is For

The SRAM XX1 Type 2.1 long-cage derailleur is aimed at serious mountain riders and racers who demand lightweight components and rock-solid drivetrain performance. It's ideal for cross-country racers, endurance riders, and aggressive trail riders running single-ring 11-speed setups with wide-range 10–42T cassettes. If you value precise, reliable shifts, reduced chain slap on technical descents, and a low overall bike weight, the XX1 is a premium upgrade that delivers race-ready performance on hard, variable terrain.

Key Features

  • ✓ X-HORIZON parallelogram for lateral stability and precise shifting
  • ✓ ROLLER BEARING CLUTCH reduces chain bounce on rough trails
  • ✓ 12T X-SYNC pulley wheels with silent tooth profile for low noise
  • ✓ CAGE LOCK feature for quick wheel removal and easier trail repairs
  • ✓ Lightweight construction — approximately 220 grams for performance gains
  • ✓ Compatible with 11-speed SRAM systems and 10–42T cassettes

Specifications

Max Front Difference Single chainring only
Maximum Cog 42T
Minimum Cog 10T
Primary Color Red
Cage Long
RD Weight 220g
Speed 11
Mount Standard

Product Identifiers

Vendor Item # 00.7518.061.001
UPC 710845764783

Frequently Asked Questions

Is this derailleur compatible with 12-speed SRAM shifters?

No. The SRAM XX1 listed here is built for 11-speed systems and uses X-ACTUATION indexing specific to SRAM 11-speed shifters. It will not shift correctly with 12-speed shifters.

Can I use this derailleur with a double chainring setup?

This model is intended for single chainring setups only. The spec sheet lists 'Max Front Difference: Single chainring only.' Using it with a double chainring will compromise shifting performance and is not recommended.

What cassette range does the XX1 long cage support?

The long cage handles a cassette range up to a 42T largest cog (minimum 10T). That makes it a good match for wide-range 11-speed cassettes commonly used in trail and enduro-style builds.

How much maintenance do the roller clutch and pulleys need?

The roller bearing clutch and sealed pulley bearings are designed for low maintenance. Periodic cleaning and light lubrication will keep them working smoothly; replace pulleys if you notice excessive play or wear. Follow SRAM's service intervals for best results.

What mount type does this derailleur require?

This XX1 uses a standard derailleur hanger mount. Ensure your frame has a compliant hanger and that it's straight for optimum shifting performance.

Why choose Type 2.1 over other derailleur types?

Type 2.1 adds an improved clutch engagement window and more stable chain management compared with earlier Type 2 designs, giving better chain retention and quieter operation on rough terrain.

Buying Guide

When choosing a rear derailleur for mountain riding, prioritize compatibility (speed, shifter match, and cassette range), cage length for chain wrap, and clutch technology for chain control. The SRAM XX1 Type 2.1 is aimed at riders using single-ring 11-speed drivetrains and wide-range 10–42T cassettes. Consider weight and materials if you're building a race-focused bike, but also factor in durability and serviceability for aggressive trail use. Verify your frame's hanger type, confirm shifter compatibility with X-ACTUATION, and keep a spare set of pulleys if you ride in abrasive or muddy conditions.

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