()

SRAM X4 Rear Derailleur 7-8-9 Speed

• Triple compatibility for 7-speed, 8-speed, and 9-speed systems - Works seamlessly across 7-speed, 8-speed, and 9-speed drivetrains, providing maximum flexibility for different bike setups and making it ideal for upgrades, replacements, and mixed-component builds

• SRAM X4-level reliability for recreational riding - SRAM's proven X4 engineering delivers dependable shifting for recreational mountain biking, commuting, and trail riding at an entry-level price point

• 1:1 Exact Actuation for precise shifting - SRAM's 1:1 actuation ratio provides exact gear indexing with minimal cable movement, delivering crisp, predictable shifts and simplified adjustment compared to other systems

• Durable construction for everyday use - Robust build quality withstands the demands of daily commuting, recreational cycling, and light trail riding, offering reliable performance over thousands of miles without premium pricing

• Budget-friendly replacement solution - Provides reliable SRAM quality at an accessible price point, making it perfect for entry-level bikes, bike repairs, and riders who need basic, dependable shifting performance across multiple speed configurations

Brand: Sram

Type: 7-8-9 Speed

Availability: In stock Out of stock

Delivery: 2-3 working days

Product variants

Regular price: £24.89
Sale price: £24.89
Regular price
Unit price: per

Quantity

Description

SHIFTING PERFORMANCE

Leveraging the legendary history of SRAM shifting, the X4 rear derailleur provides great shifting performance.

SPECIFICATIONS

Speed (RD): 9/8/7s

Cable pull ratio: 1:1

Cage (RD): Long

Max tooth: 34

Pulley bearings material: Steel

Cage material (RD): Aluminium

Shipping & Returns

Our Promise

All orders are carefully prepared and dispatched within 1-2 business days. Once your package is on its way, you will receive a confirmation email with a tracking number so you can follow its journey.

Same‑Day Dispatch

Orders placed before 2pm are dispatched the same day via Royal Mail Tracked 24.

If there are any stock issues, we will contact you by phone or email to update you and reorganise delivery.

Shipping Costs

• Orders over £50 qualify for free shipping.

• Orders under £50 have a flat delivery fee of £3.00.

Letterbox‑Friendly Items

Any items that can be delivered through a standard letterbox will be sent via Royal Mail 24 for convenience.

Optional Special Delivery Upgrade

For urgent orders, you can upgrade to Royal Mail Special Delivery Guaranteed by 1pm.

This upgrade is available at checkout for orders placed before 2pm.

FAQ

Q: Can I use this derailleur with 7-speed, 8-speed, and 9-speed systems? A: Yes, the SRAM X4 is compatible with 7-speed, 8-speed, and 9-speed drivetrains. SRAM's 7-speed, 8-speed, and 9-speed mountain bike systems use the same 1:1 actuation ratio and compatible cog spacing, so this derailleur works seamlessly with any of these setups. Just ensure you're using matching SRAM shifters, cassettes/freewheels, and chains for your specific speed configuration.

Q: Can I use the SRAM X4 with Shimano shifters? A: No, the SRAM X4 uses SRAM's Exact Actuation (1:1) ratio, which is different from Shimano's cable pull ratio. You must pair it with SRAM 7-speed, 8-speed, or 9-speed mountain bike shifters (such as X3, X4, X5, or higher models). Mixing SRAM derailleurs with Shimano shifters or vice versa will result in poor or non-functional shifting due to incompatible cable pull ratios.

Q: What cassette or freewheel sizes can the SRAM X4 handle? A: The SRAM X4 can accommodate a range of cassettes or freewheels depending on the cage length. Medium-cage versions typically handle cassettes up to 32-34 teeth, while long-cage versions can accommodate cassettes up to 34-36 teeth on the largest cog. Common compatible ranges include 11-32T, 11-34T, and 14-34T (Megarange). Check your specific model's total capacity specification to ensure it matches your drivetrain setup.

Q: What does SRAM's Exact Actuation (1:1) mean? A: SRAM's Exact Actuation (1:1) means that for every 1mm of cable pulled by the shifter, the derailleur moves exactly 1mm laterally. This creates a direct, predictable relationship between shifter movement and derailleur movement, resulting in precise indexing, easier setup, more consistent shifting performance, and simplified troubleshooting. It's fundamentally different from Shimano's ratio, which is why SRAM and Shimano components aren't interchangeable.

Q: How do I adjust and maintain the SRAM X4? A: Basic adjustment involves: 1) Setting the high limit screw (marked "H") to prevent the chain from overshooting the smallest cog, 2) Setting the low limit screw (marked "L") to prevent shifting past the largest cog, 3) Adjusting cable tension using the barrel adjuster for crisp shifts across all gears, and 4) Setting the B-screw to control the gap between the upper pulley and cassette. Regular maintenance includes cleaning the pulley wheels, lubricating pivot points, checking cable condition, and replacing worn pulleys. The 1:1 actuation and straightforward design make adjustment accessible for home mechanics.