


COMP Cams Camshaft LS1 XR275HR-12
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
COMP Cams Camshaft LS1 XR275HR-12Hydraulic Roller XFI RPM Hi Lift: Great street strip camshaft for mid range and high rpm power. Requires custom tuning.; 275 277 Advertised Duration, 222 224 Duration . 050", . 566" . 568" Lift, 112 Lobe Separation; Use Beehive Valve Spring part #26918 16 with this camshaft This Part Fits: Year Make Model Submodel 2001 2004 Avanti II Base 2008 2009 Buick LaCrosse Super 2004 2007 Buick Rainier CXL 2004 2005 Buick Rainier CXL Plus 2004 2006,2009 2015
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4.1 ★★★★★
Based on 703 reviews
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Product Reviews
★★★★★ 1
Some of the components are plastic
This is not a heavy duty application what so ever . One of the flanges broke . We do not recommend this product
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Reviewed in the United States on July 5, 2024
★★★★★ 2
Quality control lacking
One tee conector was missing. Nothing avaliable locally that fits.
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Reviewed in the United States on July 13, 2025
★★★★★ 1
It doesn’t stay in
The pipe keeps coming out. Not worth the money. Not sturdy to hold a top table.
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Reviewed in the United States on February 20, 2024
★★★★★ 2
Good finish, poor hardware.
Set screws are poor quality and are sometimes powdercoated on the exposed threads. Leads to striped hex sockets and inability to tighten properly.
Durable finish as evidenced by no visible damage after throwing parts across the shop in frustration.
Ended up running self tapping screws thru parts to complete assembly.
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Reviewed in the United States on February 26, 2024
★★★★★ 1
Kinda flimsy…
Thought the assembly was metal, it’s some kind of PVC.
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Reviewed in the United States on September 22, 2025