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Gravity

Gravity Sram x4 Rear Derailleur Long Cage

★★★★★4.1 (5 reviews)

Reliable Shifting Performance for Mountain and Hybrid Bikes The SRAM X.4 Rear Derailleur provides precise and dependable shifting for recreational mountain biking and hybrid cycling. Specifications Cage Length: Long Capacity: 45T Derailleur Action: Top-Normal (Traditional) Drivetrain Spacing...

$23.00*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

Reliable Shifting Performance for Mountain and Hybrid Bikes

The SRAM X.4 Rear Derailleur provides precise and dependable shifting for recreational mountain biking and hybrid cycling.

Specifications

  • Cage Length: Long
  • Capacity: 45T
  • Derailleur Action: Top-Normal (Traditional)
  • Drivetrain Spacing: SRAM 9
  • Largest Cog: 34T
  • Min/Max Cog: 11/34T
  • Speeds: 7/8/9-speed compatible
  • Weight: 310g

Key Features

Cage Lengths: SGS-long, Capacity: 45T, Derailleur Action: Top-Normal (Traditional)

Derailleur Color: black, Drivetrain Spacing: Shim /SRAM 9, Largest Cog: 34teeth, Min/Max: 11/34T

Shifter/Rear Derailleur : SRAM 1:1, Speeds: 7/8sp, Speeds: 8sp, Speeds: 9sp, Weight: 310g

NO RETAIL PACKAGING

Specifications

Cage Length
SGS-long
Capacity
45T
Derailleur Action
Top-Normal (Traditional)
Derailleur Color
black
Drivetrain Spacing
Shim /SRAM 9, SRAM 1:1
Largest Cog Supported
34teeth
Min/Max Cog Supported
11/34T
Speeds Compatible
7/8sp, 8sp, 9sp
Weight
310g

Pros & Cons

👍 Pros

  • Designed with an SGS-long cage length, accommodating a wide range of gearing options for different riding styles.
  • Offers a substantial 45T capacity, allowing for versatile cassette choices and gear ratios.
  • Compatible with 7-speed, 8-speed, and 9-speed drivetrains, providing flexibility for various bicycle setups.
  • Features a traditional top-normal derailleur action, familiar to many riders and easy to adjust.
  • Supports a large cog of up to 34 teeth, which is beneficial for climbing steep inclines.
  • Lightweight construction at 310g contributes to overall bicycle weight reduction.

👎 Cons

  • The derailleur does not come in retail packaging, which may affect presentation or perceived value for some buyers.
  • Only available in black, which might not match all bicycle aesthetic preferences.
  • Specifically designed for SRAM 1:1 drivetrain spacing, limiting compatibility with other shifter brands.
  • Maximum largest cog supported is 34 teeth, which may not be sufficient for riders seeking extremely low gearing with wider range cassettes.
  • The 7/8/9-speed compatibility means it is not suitable for modern 10, 11, or 12-speed drivetrains.

Frequently Asked Questions

SGS-long cage indicates that the derailleur has a long cage length, which is designed to handle a wider range of gears and larger capacity cassettes, specifically up to 45T capacity.
This Gravity Sram x4 rear derailleur is designed to work with a largest cog of up to 34 teeth, which is beneficial for climbing and varied terrain.
While it lists "Shim/SRAM 9" drivetrain spacing, it explicitly specifies "SRAM 1:1" for the shifter/rear derailleur compatibility, indicating it is primarily designed for SRAM 1:1 actuation shifters.
This derailleur is compatible with 7-speed, 8-speed, and 9-speed drivetrains, offering versatility for a range of older and mid-range bicycle setups.
No, the product description explicitly states "NO RETAIL PACKAGING."
This rear derailleur weighs 310g, making it a relatively lightweight component for its category.
Top-Normal derailleur action means the derailleur rests in the smallest cog when there's no cable tension, which is the traditional setup for most mechanical rear derailleurs.

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