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 6I52 Flexible PVC Reducing Coupling with Stainless Steel Clamps, 2.4" x 1.6" Inner Diameter for 2" x 1-1/4 Nominal Pipe, Black

Product ID: 376641860

Details

Brand
Supply Giant
Colour
Black
Item dimensions L x W x H
5.1 x 5.1 x
Material
Polyvinyl
Size
2 x 1-1/4

🌍ASTM C1173 & UPC certified for underground use

🔧2.4" x 1.6" inner diameter precision fit

🛡️Stainless steel clamps for corrosion resistance

€ 35.34

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Description

🔗 Connect with confidence — the pro’s choice for flawless pipe transitions!

CERTIFIED CODE READY - Meets ASTM C1173, CSA B602, and UPC standards for peace of mind
LEAK PROOF ROT PROOF - Engineered to prevent infiltration and exfiltration, ensuring lasting reliability
EFFORTLESS INSTALLATION - Flexible design and stainless clamps make upgrades and repairs a breeze
UNIVERSAL COMPATIBILITY - Seamlessly connects cast iron, copper, plastic & steel pipes
DURABLE PVC CONSTRUCTION - Resistant to chemicals, UV rays, fungus & sewer gases for all environments

The Supply Giant 6I52 Flexible PVC Reducing Coupling offers a precision fit for 2" to 1-1/4" nominal pipes, combining durable PVC with stainless steel clamps. Certified for underground and sewer applications, it guarantees leak-proof, rot-proof connections compatible with multiple pipe materials. Trusted by professionals for easy installation and long-lasting performance in demanding plumbing systems.

Specifications

ASIN	B07C7MT2GG
ASIN	B07C7MT2GG
Brand Name	Supply Giant
Color	Black
Connector Type	Flange
Customer Reviews	4.4 4.4 out of 5 stars (652)
Customer reviews	4.4 4.4 out of 5 stars (652)
Date First Available	1 January 2024
Exterior Finish	Brass
Global Trade Identification Number	00804595048306
Included Components	Coupling
Item Dimensions	5.1 x 5.1 x 7.6 centimeters
Item Type Name	Flexible PVC Reducing Coupling with Stainless Steel Clamps, 2" x 1-1/4, Black
Item model number	6I52
Manufacturer	Everflow
Manufacturer	Everflow
Manufacturer Part Number	6I52
Material Type	Polyvinyl Chloride
Model Number	6I52
Number of Packs	1
Number of Pieces	1
Product Dimensions	5.08 x 5.08 x 7.62 cm; 150 g
Size	2 x 1-1/4
Thread Size	2 inch
Thread Type	NPT
UPC	804595048306

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€ 35.34

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered 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 Croatia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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