CYCrown | Rear Derailleur | 3720427

SKU: 3720427

$30.00

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Model

Rear Derailleur — Precise Bicycle Shifting

Overview

A compact, reliable rear derailleur designed to deliver accurate gear changes on road and off-road bikes. It combines a sturdy alloy body with sealed pulleys and a user-friendly adjustment system so you spend less time fiddling and more time riding.

Benefits

Shifts more reliably so you spend less time fixing gears and more time riding.
Reduced chain noise and slap for a quieter, more comfortable ride.
Wide-range compatibility makes it easier to tackle steep climbs without swapping components.
Durable construction lowers maintenance frequency and replacement costs.
Simple adjustments let you tune shifting quickly on the road or trail.

Features

Indexed mechanical shifting compatible with standard shifters.
Clutch mechanism to stabilize the chain and reduce chain drops on rough terrain.
Sealed-bearing jockey wheels for smoother rotation and longer life.
B-tension adjustment screw for precise alignment with the cassette.
Replaceable upper and lower pulley wheels for easy serviceability.
Available in medium and long cage options to handle different cassette ranges.
Hanger-mount design fits most modern dropouts with a derailleur hanger.

Specifications

Weight: ~250 g (medium cage, approx.)
Material: Aluminum alloy body, steel hardware, composite pulley cage
Pulley wheels: 11T sealed-bearing jockeys
Compatible speeds: 9–12 speed drivetrains
Maximum sprocket: up to 34T–36T (depending on cage and hanger geometry)
Total capacity: up to 30T (chainring difference + cassette range)
Cage lengths: Medium (~50 mm) and Long (~70 mm) options
Mounting: Standard derailleur hanger (hanger-mounted)
Finish: Matte black anodized with corrosion-resistant hardware
Operating temperature range: -10°C to 50°C

Free standard shipping on all U.S. orders over $200. Orders are typically processed within 1–2 business days (Mon–Fri). Delivery usually takes 4–7 business days after dispatch. Tracking details are emailed once your order ships. View full Shipping Policy .

For help, contact us at support@DiscoverAndDo.com or call 1-833-657-4927 (Mon–Fri, 9 AM–6 PM EST).

Enjoy easy returns within 30 days of delivery. Items must be unused, undamaged, and in original packaging. Change-of-mind returns may be subject to a 25% restocking fee. Defective, damaged, or incorrect items are fully covered with free return shipping and a replacement or full refund. View full Returns & Refund Policy .

For help, contact us at support@DiscoverAndDo.com or call 1-833-657-4927 (Mon–Fri, 9 AM–6 PM EST).

Description

Rear Derailleur — Precise Bicycle Shifting

Overview

Benefits

Shifts more reliably so you spend less time fixing gears and more time riding.
Reduced chain noise and slap for a quieter, more comfortable ride.
Wide-range compatibility makes it easier to tackle steep climbs without swapping components.
Durable construction lowers maintenance frequency and replacement costs.
Simple adjustments let you tune shifting quickly on the road or trail.

Features

Indexed mechanical shifting compatible with standard shifters.
Clutch mechanism to stabilize the chain and reduce chain drops on rough terrain.
Sealed-bearing jockey wheels for smoother rotation and longer life.
B-tension adjustment screw for precise alignment with the cassette.
Replaceable upper and lower pulley wheels for easy serviceability.
Available in medium and long cage options to handle different cassette ranges.
Hanger-mount design fits most modern dropouts with a derailleur hanger.