hi there, just i wanna confirm that the 52T have a 110mm diameter

Yes, 110 BCD (bolt center diameter). It measured accrurately as described.

Is the 52t outer ring compatible with a 34t inner ring, or does it have to go with a 36t inner ring?

The one I ordered was a 53T outer chain ring. Mine is a 39T inner ring I would think keeping it paired as it was original is best, most likely the 36T, you will have to consider chain length, derailleur type / groupo and cassette set if you make changes or you will not be able to make the best use of your shifting range and may wear out all of the components prematurely and have difficulty shifting.

Want to replace 8 spd 110 48t chainring on '07 Specialized Sirrus. Will this fit?

No, the 8 speed gear ratio will have a wider pitch between teeth, groupos have to be compatible, you would find even changing the cassette and chain it will be nearly impossible to change gears with the old derailleur and shifters. You might even have a different bolt circle.

Will this work with a 8 speed

You will need to make sure the size of the sprocket will work with your derailleur and also make sure the bolt pattern matches.

Fsa | Desertcart Italy

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Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Shift Like a Pro, Ride Like You Own the Road

LIGHTWEIGHT YET TOUGH - Crafted from aerospace-grade aluminum, weighing just 200 grams to keep your ride fast and responsive.
ROCK SOLID DURABILITY - Stainless steel pins on outer and middle rings ensure long-lasting, reliable engagement under pressure.
SLEEK STEALTHY DESIGN - Black anodised finish with CNC detailing offers a premium, race-ready aesthetic that stands out.
OPTIMIZED FOR CAMPAG 11 SPEED - Laser-etched logos and compatibility with Campag 11-speed (C11) systems for seamless integration.
ENGINEERED FOR PEAK PERFORMANCE - Precision CNC machined A7075/T6 shifting ramps deliver unmatched shifting accuracy and durability.

The FSA chainring combines aerospace-grade A7075/T6 aluminum with precision CNC machining and stainless steel pins to deliver superior shifting performance and durability. Finished in sleek black anodising with laser-etched logos, it’s optimized for Campag 11-speed systems, weighing only 200 grams for a lightweight yet robust upgrade to your cycling setup.

Specifications

ASIN	B00HU7OPDE
Batteries	1 12V batteries required.
Batteries Included?	No
Best Sellers Rank	#172,347 in Sporting Goods ( See Top 100 in Sporting Goods ) #757 in Bike Drivetrain Components
Brand	FSA
Color	Black
Customer Reviews	4.5 4.5 out of 5 stars (280)
Date First Available	24 September 2014
Department	Unisex
Height	1 inches
Is Discontinued By Manufacturer	No
Item model number	371-0252A
Length	10 inches
Manufacturer	FSA
Material Type	Aluminum
Number of Items	1
Product Dimensions	23.37 x 23.37 x 0.76 cm; 181.44 g
Season	continuity 2014
Size	110 × 52t
Sport	Cycling
Style	Chainring
Usage	cycling
Weight	200 Grams
Width	10 inches

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