SRAM X01
X01
SRAM

SRAM X01

In Stock

High-performance SRAM X01 11-speed MTB rear derailleur engineered for precise, stable shifting with X-HORIZON and Roller Bearing Clutch technologies. Medium cage handles up to 42T cogs.

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Available Options

Option Price Availability
SRAM, X01, Rear derailleur, 11sp., Type 2.1, Medium cage, Black — In Stock
SRAM, X01, Rear derailleur, 11sp., Type 2.1, Medium cage, Red — Out of Stock

Product Details

Overview & Technology

The SRAM X01 rear derailleur brings race-proven MTB tech to trail and all-mountain riders. Built around SRAM's X-HORIZON parallelogram geometry, the design minimizes ghost shifts under load and keeps the upper pulley more vertical for consistent chain wrap and precise indexing. The derailleur integrates ROLLER BEARING CLUTCH technology to stabilize the cage and control chain bounce on rough trails, plus CAGE LOCK for fast wheel removal and easy setup. X-ACTUATION shifting maps SRAM shifter actuation to exact derailleur movement for crisp, reliable shifts across the cassette.

Key Features & Construction

The X01 blends lightweight materials and rugged hardware: an aluminum alloy parallelogram and mounting bolt with hardened steel pivots and fasteners for lasting durability. The medium cage is sculpted from a composite/aluminum mix to balance stiffness and weight—combined unit weight is listed around 220g (manufacturer) with a packaged weight near 252g. Look for precision details like 12T X-SYNC pulley wheels with a silent tooth profile, sealed bearings in critical pivots, and a refined clutch mechanism that maintains chain tension without zapping shift performance. These elements yield quieter operation, reduced chain slap, and consistent performance under load.

Fit, Compatibility & Specs

The X01 is designed for SRAM 11-speed drivetrains using X-ACTUATION; it pairs with SRAM 11sp shifters and chains and is optimized for cassettes up to a 42T largest cog. This model ships in a Medium cage, suitable for a wide range of 1x setups and common cassette ranges. Mounting uses a standard derailleur hanger interface. Key specs: 11-speed, Type 2.1 clutch, medium cage, maximum cog 42T, available in Black or Red. Manufacturer Part #: 00.7518.064.000, Product #: 260150, SRAM Model ID: RD-X0-1-A2. Check hanger alignment and B-tension adjustment when installing to ensure smooth shifting across the full cassette range.

Who This Derailleur Is For

The X01 is aimed at serious trail, enduro-lite, and gravity-oriented mountain bikers who want race-capable shifting without full-on downhill components. If you demand precise, snappy shifts, reduced chain slap on rough descents, and a durable clutch system that lets you push hard on technical terrain, X01 delivers. It's especially well suited for riders running 1x drivetrains with mid-range cassettes (up to 42T) who favor a lightweight yet reliable derailleur that tolerates hard riding and infrequent maintenance between service intervals.

Key Features

  • ✓ X-HORIZON geometry for consistent, ghost-shift-free indexing
  • ✓ ROLLER BEARING CLUTCH stabilizes the cage and reduces chain slap
  • ✓ CAGE LOCK simplifies wheel removal and rotor handling
  • ✓ X-ACTUATION optimized for crisp SRAM 11-speed shifting
  • ✓ 12T X-SYNC pulleys with silent tooth profile for quiet running
  • ✓ Medium cage fits most 1x setups and cassettes up to 42T
  • ✓ Aluminum alloy parallelogram with steel hardware for durability

Specifications

Maximum Cog 42T
Primary Color Black
Cage Medium
RD Weight 252g
Speed 11
Mount Standard

Product Identifiers

Vendor Item # 00.7518.064.000
UPC 710845764035

Frequently Asked Questions

Is the SRAM X01 compatible with Shimano shifters?

No. The X01 uses SRAM's X-ACTUATION actuation ratio and is designed to work with SRAM 11-speed shifters. It will not index correctly with Shimano shifters.

What maximum cassette size does this derailleur support?

This X01 is rated for a maximum cog size of 42T with the medium cage. Use a compatible B-tension setting and check hanger alignment for best performance.

How does the Roller Bearing Clutch affect maintenance?

The Roller Bearing Clutch reduces cage movement and keeps the chain under tension, which lowers the chance of drops and reduces wear from chain slap. It adds an internal mechanism that benefits from occasional inspection and light lubrication but is built for long service intervals.

What is the difference between medium and long cage?

Medium cage is intended for most 1x setups and mid-range cassette spreads (up to 42T). Long cage derailleurs handle larger total capacity—useful if you pair big chainrings with wide-range cassettes. Choose cage length based on chain wrap and total teeth capacity of your drivetrain.

Can I use this on a bike with a 12-speed SRAM drivetrain?

No. This X01 model is specifically for SRAM 11-speed systems. For 12-speed SRAM drivetrains you should select a derailleur engineered for 12-speed actuation and cassette compatibility.

What paint/finish options are available?

This item is offered in Black and Red finishes. Both variants use the same hardware and spec; the difference is cosmetic.

Buying Guide

When choosing an MTB rear derailleur, match actuation (SRAM vs Shimano), cassette size, and cage length to your drivetrain and riding style. For 1x setups, prioritize medium or long cages based on the largest cog and chainring combination; ensure the derailleur's max cog rating meets or exceeds your cassette's biggest cog. Consider materials and clutch design: aluminum bodies with sealed pivots offer a good balance of weight and durability, while advanced clutch systems (like Roller Bearing Clutch) reduce chain slap and increase confidence on technical terrain. If you run SRAM 11-speed shifting and want race-grade performance with robust chain control, the X01 is a strong fit.

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