SRAM NX Eagle Pulley Kit
SRAM

SRAM NX Eagle Pulley Kit

$25.00
In Stock

OEM replacement pulley kit for SRAM NX Eagle rear derailleurs. Reinforced polymer pulleys with sealed bearings restore crisp shifting and extend drivetrain life.

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Product Details

Overview & Technology

SRAM NX Eagle Pulley Kit (model RD-SPP-A0) is a purpose-built replacement kit for NX Eagle rear derailleurs. The kit includes two precision-molded pulley wheels designed to match Eagle chain geometry and restore index-perfect shifting when your original pulleys are worn or noisy. The pulleys use a reinforced polymer (glass-filled nylon) outer and corrosion-resistant, sealed cartridge bearings to balance weight, durability, and low friction. That construction reduces drivetrain drag and resists grit and water on trail rides, giving you reliable performance mile after mile.

Key Features

Built for mountain-bike use: the pulleys are optimized for Eagle chains and 1x drivetrains, keeping chain retention and shift precision under hard use. The tooth profile and flange geometry are matched to SRAM tolerances for consistent chain tracking. Real-world benefits include smoother rotation under load, less chain noise, and simpler maintenance. The sealed bearings cut maintenance intervals while the polymer wheel keeps weight low and resists impact damage on trail crashes. • Reinforced polymer pulley wheels for impact resistance • Sealed cartridge bearings for reduced maintenance • Precision tooth profile matched to Eagle chains

Fit & Compatibility

This pulley kit is compatible specifically with SRAM NX Eagle rear derailleurs. It is the OEM replacement part for NX/SX Eagle models and follows SRAM's RD-SPP-A0 specification and part number 11.7518.090.000. Installation is straightforward: remove the derailleur cage, swap out the old pulleys for the new wheels and bearings, torque the mounting bolts to SRAM's recommended spec, and check B-tension/chain wrap. The kit is sized to fit the standard NX derailleur cage—verify cage length and bolt size if replacing pulleys from other drivetrain families.

Who This Is For

This kit is ideal for mountain riders running SRAM NX Eagle 1x drivetrains who want an affordable, OEM-fit pulley replacement. It's perfect for weekend trail riders, commuters on rough roads, and bike shop techs stocking a reliable spare part. If your derailleur is showing lateral slop, noisy chain engagement, or excessive wear on the pulley teeth, replacing the pulleys will bring back crisp shifting and extend the life of your chain and cassette—making this an economical, high-value maintenance item.

Key Features

  • ✓ OEM-fit replacement specifically for SRAM NX Eagle rear derailleurs
  • ✓ Reinforced glass-filled nylon pulley wheels for impact resistance
  • ✓ Sealed cartridge bearings for low friction and reduced maintenance
  • ✓ Precision tooth profile matched to Eagle chain geometry
  • ✓ Lightweight design keeps overall derailleur weight down
  • ✓ Easy swap — fits standard NX cage and hardware
  • ✓ Restores crisp shifting and reduces drivetrain noise

Specifications

Pulley Compatibility NX Eagle

Product Identifiers

Vendor Item # 11.7518.090.000
UPC 710845820359

Frequently Asked Questions

Will these pulleys fit my SRAM NX Eagle derailleur?

Yes — this kit is an OEM replacement designed specifically for SRAM NX/SX Eagle rear derailleurs (SRAM model RD-SPP-A0). Confirm your derailleur is an NX Eagle variant and that cage length and bolt sizes are standard before ordering.

Are the pulleys sealed bearings or bushings?

The NX Eagle pulley kit uses sealed cartridge bearings to reduce entry of dirt and water and to lower ongoing maintenance. That construction provides smoother rotation compared with unsealed bushings and helps maintain shifting precision between service intervals.

How often should I replace derailleur pulleys?

Replacement intervals vary with riding conditions, but inspect pulleys every 6–12 months for lateral play, tooth wear, or rough rotation. Wet, gritty, or very muddy conditions shorten service life—replace sooner if you notice noisy shifting or chain skipping.

Can I install these pulleys myself?

Yes — basic mechanical skills and common tools are sufficient. Remove the derailleur cage, transfer or replace shims if needed, reassemble with the new pulleys, and torque bolts to SRAM's spec. If unsure, have a shop tech do the install to ensure correct alignment and tension.

Do these pulleys change derailleur geometry or shifting ratios?

No — these are direct replacement pulleys matched to OEM specifications so they won't alter derailleur geometry or gear ratios. They restore the original chain path and shift feel when worn pulleys are replaced.

What packaging and weight can I expect?

The kit ships compactly (approx. 3.4 x 2.1 x 1 inches) and is very light—around 0.1 lb—so it’s easy to keep as a spare in your tool kit or parts drawer.

Buying Guide

When choosing a derailleur pulley kit, prioritize compatibility, bearing type, and construction. OEM-fit kits like the SRAM NX Eagle Pulley Kit ensure the tooth profile and flange spacing line up with Eagle chains and the NX derailleur cage, preventing poor shifting or premature chain wear. Choose sealed bearings for lower maintenance and better rotation in wet/muddy conditions; pick reinforced polymer or aluminum wheels for a balance of weight and durability. Keep a spare pulley kit in your toolbox if you ride frequently—the small investment pays off by restoring crisp shifting and prolonging chain and cassette life.

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