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Shimano Altus M2000 9sp Rear Derailleur

• Reliable 9-speed shifting performance - Shimano Altus-level engineering delivers consistent, dependable shifting across 9-speed drivetrains, providing practical gear range for recreational riding, commuting, and light trail use at an entry-level price point

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

• Wide cassette compatibility - Accommodates a range of 9-speed cassette sizes, making it versatile for different riding styles and terrain requirements, from flat commuting to moderate hills

• Easy setup and adjustment - Straightforward installation and tuning make it accessible for home mechanics and bike shops, with Shimano's proven design ensuring compatibility with Altus, Acera, and other 9-speed Shimano mountain bike components

• Cost-effective replacement or upgrade solution - Provides reliable Shimano quality at a budget-friendly price, making it perfect for bike repairs, entry-level builds, and riders who prioritize dependability and value over premium features

Brand: Shimano

Type: 9 Speed

Availability: In stock Out of stock

Delivery: 2-3 working days

Product variants

Regular price: £29.89
Sale price: £29.89
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Description

Shimano's Altus RD-M2000 SGS Shadow rear derailleur guarantees reliable and precise gear shifts, thanks to its enlarged parallelogram. With its flat profile, it is ideally suited for use in difficult terrain as well.

Compatible with 7-/8-/9-speed, long cage

Shimano Shadow RD design

Cable tension adjuster directly at the rear derailleur

11-teeth derailleur wheels

Maximum sprocket size: 32 - 36 teeth

Minimum sprocket size: 11 - 12 teeth

Total capacity: 45 teeth

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

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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: What cassette sizes is the Altus M2000 compatible with? A: The Altus M2000 is designed for 9-speed cassettes, with compatibility depending on the cage length. Short-cage (SS) versions typically handle cassettes up to 32 teeth, while long-cage (GS/SGS) versions can accommodate cassettes up to 36 teeth on the largest cog. Common compatible ranges include 11-28T, 11-32T, 11-34T, and 11-36T. Check your specific model's cage length and total capacity specifications to ensure proper compatibility.

Q: Is this derailleur compatible with 10-speed or 11-speed systems? A: No, the M2000 is designed specifically for 9-speed drivetrains and is not compatible with 10-speed, 11-speed, or 12-speed systems. Shimano's different speed systems use different cable pull ratios and cog spacing, so mixing components from different speed groups will result in poor or non-functional shifting. Use this derailleur only with 9-speed shifters, cassettes, and chains.

Q: Can I use the Altus M2000 with Shimano road shifters? A: No, the M2000 is a mountain bike derailleur that uses Shimano's MTB cable pull ratio, which is different from road shifters. You must pair it with Shimano 9-speed mountain bike shifters (such as Altus, Acera, Alivio, or Deore 9-speed models). Mixing MTB derailleurs with road shifters or vice versa will result in poor shifting performance due to incompatible cable pull ratios.

Q: How does the Altus M2000 compare to higher-tier Shimano derailleurs like Alivio or Deore? A: The Altus M2000 is Shimano's entry-level 9-speed derailleur, offering reliable basic performance at a lower price point. Higher-tier models like Alivio and Deore feature improved materials, tighter tolerances, smoother shifting, lighter weight, and often Shadow design for better protection. For recreational riding and commuting, the M2000 provides excellent value, while more demanding riders may prefer the refinement of higher-tier options.

Q: How do I adjust and maintain the Altus M2000? A: Basic adjustment involves: 1) Setting the high limit screw to prevent the chain from overshooting the smallest cog, 2) Setting the low limit screw 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 largest cog. Regular maintenance includes cleaning the pulley wheels, lubricating pivot points, checking cable condition, and replacing worn pulleys. Keep the derailleur clean and properly adjusted for optimal performance.