Does it work with mongoose R4050WM 21 speed mountain bike?

I used it on my teens mongoose, unsure of the model, but I would think so?

Does it work for a 21 speed bike?

Yes, we used it for a 21 Speed Mongoose bike

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⚡ Shift into the future with precision and power!

DIRECT BRAZE ON MOUNT - Easy installation with a direct mount system tailored for frames with a hanger hook—no hub bolt fuss.
UNIVERSAL COMPATIBILITY - Perfect for mountain, road, and folding bikes, making it the go-to upgrade for any cycling enthusiast.
WIDE GEAR RANGE CAPACITY - Supports up to 34T total capacity, handling sprockets from 14T to 28T for versatile terrain adaptability.
SEAMLESS 6 7 SPEED SHIFTING - Experience smooth, reliable gear changes with SIS Index compatibility designed for mountain and road bikes alike.
ROBUST ALUMINUM ALLOY CONSTRUCTION - Engineered for durability and stability, ensuring your ride stays safe and performance-driven mile after mile.

The Huazu RD-TZ31-A rear derailleur offers precise 6/7-speed SIS indexed shifting with a durable aluminum and plastic alloy design. Featuring a direct braze-on mount for easy installation on compatible frames, it supports a total capacity of 34T and sprockets ranging from 14T to 28T. Ideal for mountain, road, and folding bikes, this derailleur ensures stable, smooth gear transitions backed by a 1-year warranty.

₱3425

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

View all Trustpilot reviews

Mounting Type	Braze-On Mount
Number of Teeth	28
Product Dimensions	5.11"L x 3.94"W x 1.57"H
Manufacturer	Huazu
UPC	731235765869
Item Package Dimensions L x W x H	6.02 x 4.09 x 2.99 inches
Package Weight	0.28 Kilograms
Item Dimensions LxWxH	5.11 x 3.94 x 1.57 inches
Brand Name	Huazu
Warranty Description	1 Year
Model Name	RDTZ31A
Suggested Users	unisex-adult
Part Number	RDTZ31A
Size	Large

Rear Derailleur, Huazu Bike Parts Gear Shifter for RD-TZ31-A with Direct Mount/Hanger Mount for 6/7 Speed Mountain Bicycles

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