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Description
Diamond Racing LS2k 4.125" Pistons Set | 4.00" Stroke -3cc Flat TopLSX Performance Parts proudly offer the very best in piston development & innovation Diamond Racing Pistons. Founded in 1968 by a group of racers named Jim "Diamond" Cavallaro, Nick Plantas & Butch Eldkins, The guys combined their resources & industry knowledge to create the perfect pistons set. It did not take long for the game changing brand to take off In the 1970's Diamond was the go to brand for Super Stock & Pro Stock racing. As a team, Diamond
LSX Performance Parts proudly offer the very best in piston development & innovation - Diamond Racing Pistons.Founded in 1968 by a group of racers named Jim "Diamond" Cavallaro, Nick Plantas & Butch Eldkins, The guys combined their resources & industry knowledge to create the perfect pistons set.
It did not take long for the game changing brand to take off - In the 1970's Diamond was the go to brand for Super Stock & Pro Stock racing. As a team, Diamond was not focused on just supplying the very best pistons. They also did cylinder head porting, Engine building & race engine preparations. Diamond became contracted to NASCAR to builds all the engines for the IROC cars.
Just a few years later, Diamond is far ahead of their time with the most innovative & succesful pistons on the market.
Diamond is the biggest supplier of NASCAR, NHRA, Pro Stock, Drag Racing, Circle Track & Diesel markets.
Your New Diamond Racing Pistons Kit Includes
- 1 x Set of 8 Street/Strip 4.125" Diamond Racing Dish Pistons;
- 3D milling on piston crowns & ready to install finish;
- Inboard forging design with fully machined under crown for maximum strength;
- 1 x Set of Diamond premium piston rings;
- Premium H-13 .250w wrist pins & roundwire locks included;
- Moly skirt coating for friction loss & skirt wear protection;
- Valve pockets designed to work with most aftermarket cylinder heads;
- Valve pocket depth: .200" intake & .145" exhaust;
- 2618 material for high horsepower applications rated to 2,000 HP;
Diamond Racing Pistons Specs
Bore 4.125"
Stroke 4.00"
Conrod Length 6.125"
Compression Height 1.115"
Wrist Pin .927" x 2.500"
Top Ring Down .280" - .250"
Piston Material 2618 Alloy
Piston Style Flat Top
Volume -3.0cc
Ring Stack 1.5mm x 1.5mm x 3.0mm
Want To Chat To Us About Your New Pistons Set?
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Shop with confidence with free freight Australia wide & discounted pricing.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 5
What you see is what you get!
Color: 01-black, Size: Large
Fits great, fabric is amazing, turtle neck fits tight, and the quality is amazing!
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Reviewed in the United States on February 11, 2026
★★★★★ 4
A true turtleneck that retains a snug high neck.
Color: White, Size: X-Large
I've found this brand to have gotten better over the years as far as offering the American market what it needs in terms of realistic sizing. I only wish they'd realize that there are a lot of us who are long in the back and arms where my only choice is to go a size up and sacrifice a slim fit for sleeves that are long enough plus a back that doesn't go up past my waist just because I reach up for something, that and I like to be warm. So these are such nice quality turtlenecks that it's hard to complain about but maybe the company will read this. The snug neck stays up is plus number one since that's why I'm buying a full neck. They come with very nice weaves in the fabric, good enough for casual or formal wear. Finally the warmth you seek is there but I've worn them in what most would think isn't the right temp for a turtleneck. Also they have them in white! Yes, a lot of others just don't for reasons I can't fathom, and the pic you're seeing is accurate, these will form to your shape without being ridiculously thin material. Several washes later and they are as fine a garment as when I first wore them. I've only found one other brand that compares to these but it's much more expensive, COOFANDY is affordable in these times of expensive everything. Warm but also a lightweight shirt, I've gotten them really dirty with actual dirt and it washes out so well you'd never know it. Don't let my taking off one star stop you, try one yourself and you'll be coming back for more.
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Reviewed in the United States on July 30, 2025
★★★★★ 5
Quality,warmth and fit
Color: Royal Blue, Size: Small
Really top quality. This is my 4th purchase of these Really great sweaters.
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Reviewed in the United States on February 12, 2026
★★★★★ 5
Nice Sweater
Color: 01-black, Size: Large
This is a very nice sweater. It’s reasonably thick and warm. Looks nice. I like it.
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Reviewed in the United States on January 18, 2026
★★★★★ 5
Nice turtle neck sweater
Color: Royal Blue, Size: Small
It was true to size a perfect fit and the color is beautiful. Nice sweater for the amount paid.
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Reviewed in the United States on January 11, 2026