What are the ID of the 2 x 1 1/4 rubber coupling?

1 and 1/4 x 2 are the size if inner diameters

Is it possible to use for car exhaust

I wouldn't. Exhaust pipes get hot and this isn't heat resistant.

I want to know this answer as well. It doesn't say in the specs what temperature is allowed, neither transient nor continuous. From Wikipedia: The heat stability of raw PVC is very poor, so the addition of a heat stabilizer during the process is necessary in order to ensure the product's properties. Traditional product PVC has a maximum operating temperature around 60 °C (140 °F) when heat distortion begins to occur.[25] Melting temperatures range from 100 °C (212 °F) to 260 °C (500 °F) depending upon manufacture additives to the PVC. The linear expansion coefficient of rigid PVC is small and has good flame retardancy, the limiting oxygen index (LOI) being up to 45 or more. The LOI is the minimum concentration of oxygen, expressed as a percentage, that will support combustion of a polymer and noting that air has 20% content of oxygen.

2” to 1 1/4” adapter Is bigger inside opening than stated. Can a 1 1/4” p trap seal correctly?

I used to connect 2” to 1 1/2”. Both pipe were schedule 40. A P trap is normally a lighter schedule. You may need and adapter from 1 1/4” P trap to 1 1/4” schedule 40.

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Supply Giant EVERCONNECT 4830 Flexible PVC Reducing Rubber Coupling with Stainless Steel Clamps, 2" x 1-1/4, Black

Product ID: 334649180

Details

Size
2 x 1-1/4
Material
PVC
Brand
Supply Giant
Colour
Black
Item dimensions L x W x H
5.1 x 5.1 x
Connector Type
Coupling

🌍ASTM C1173 & UPC certified for underground use

🔧2" x 1-1/4" flexible reducing coupling

🛡️Leak-proof, rot-proof, sealed design

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€ 41.56

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Description

🔗 Connect with Confidence — The Ultimate Leak-Proof Coupling for Pros Who Demand Durability

LEAK ROT PROOF - Engineered to prevent infiltration and exfiltration, ensuring a secure, maintenance-free seal every time.
EASY INSTALLATION - Flexible design with stainless steel clamps simplifies repairs, cut-ins, and pipe transitions—saving you time and hassle.
DURABLE RESILIENT - Crafted from tough elastomeric PVC, resistant to chemicals, UV rays, fungus, and sewer gases for long-lasting performance.
CERTIFIED RELIABILITY - Meets ASTM C1173, CSA B602 standards and UPC approved, trusted for both indoor and underground applications.
UNIVERSAL COMPATIBILITY - Seamlessly connects cast iron, plastic, copper, lead, and steel pipes for versatile plumbing solutions.

The Supply Giant EVERCONNECT 4830 is a 2" x 1-1/4" flexible PVC reducing rubber coupling featuring stainless steel clamps. Designed for compatibility with multiple pipe materials, it offers leak-proof, rot-proof sealing certified for underground use. Resistant to chemicals, UV, and sewer gases, this coupling is trusted by professionals for durable, easy-to-install plumbing connections in drain, waste, vent, and sewer systems.

Specifications

ASIN	B07C7MT2GG
Best Sellers Rank	#258,135 in Home Improvement ( See Top 100 in Home Improvement ) #12,483 in Door Hardware & Locks
Brand	Supply Giant
Brand Name	Supply Giant
Colour	Black
Connector Type	Coupling
Country of Publication	USA
Customer Reviews	4.5 out of 5 stars 633 Reviews
Exterior Finish	Brass
Global Trade Identification Number	00804595048306
Included Components	Coupling
Item Dimensions	5.1 x 5.1 x 7.6 Centimeters
Item Height	3 Inches
Item Type Name	Flexible PVC Reducing Coupling with Stainless Steel Clamps, 2" x 1-1/4, Black
Item dimensions L x W x H	5.1 x 5.1 x 7.6 Centimeters
Manufacturer	Everflow
Material	Polyvinyl Chloride
Material Type	Polyvinyl Chloride
Model Number	6I52
Number of Pieces	1
Size	2 x 1-1/4
Thread Size	2 x 1-1/4
Thread Type	NPT
UPC	804595048306

Reviews

W**E

1 1/4 to 2 inch coupling

23.08.2025

C**N

Great

22.11.2025

R**B

Tight fit. excellent quality !!

15.11.2025

S**P

PVC reducing coupling

11.02.2025

R**N

Good

12.12.2025

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€ 41.56

Duties & taxes included

In stock

Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Italy.

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