BTR Gen 3 & 4 Truck Norris NSR Cam

Marsoni

M251S

$179.47

Get it in 3 business days with 1 day shipping. Friday, May 29

BTR Gen 3 & 4 Truck Norris NSR CamBTR Gen III & IV LS Truck Norris No Springs Required Cam No Springs Required More Power Everywhere Specs: 212 22X duration, . 498 . 498 lift, 107 LSA Intake lobe lift @ TDC: 0. 05030 NSR design compatible with factory valve springs Broad torque and power gains across the RPM range Ideal for 19992013 Silverado, Sierra, and other LS powered trucks Built from extensive in house dyno testing and custom lobe design Delivers improved performance over BTR's

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Your BTR Gen 3 & 4 Truck Norris NSR Cam orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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I bought 5 or 6 of these tops in a variety of patterns and colors to get me through the summer. They're nice but expect smaller than US sizing by about 1 or 1 1/2 sizes. I ordered a larger size with that in mind and it fits to my body with no "loose fit" as shown in the advertisement. The tag on the inside left is extremely annoying and just happens to be the best sewn piece, so remove with care or you'll have a hole in the seam. Ask me how I know. The material has a bit of stretch and is somehow softer to the touch on the outside than on the inside. Other than that, they're comfortable enough, lightweight but kept their shape and size when laundered, nice colors and patterns. One of the tops was a little more vibrant in color than pictured, but overall a good purchase for the price considering I didn't need to drive from store to store trying to find summer tops. Consider the source and look for a few loose threads. Expect shipping delays with customs. My tops came in 3 different shipments over time.

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Reviewed in the United States on May 26, 2026

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greenfirefly

Houston, US

★★★★★ 5

Good for the price

Color: A-mz721- Multicolor, Size: X-Large

The fabric is soft and not see-through, the size is right on and plenty long even if you're tall. My only complaints are that the design is not quite as pretty in reality, and it smelled really bad right out of the package. I had to wash it before I even tried it on.

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Reviewed in the United States on June 3, 2026

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PCH

West Palm Beach, US

★★★★★ 5

Great top!

Color: Jb204-black and White, Size: Small

This was a great top. I really like it. Good material, fit true to size, and washed & dried very nicely Perfect for summer.

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Reviewed in the United States on June 4, 2026

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