SKU: 46946500682

Comp Cams Camshaft Kit, LS1 XR281HR-12

$586.49 $651.66
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Description

Comp Cams Camshaft Kit, LS1 XR281HR-12Specifications Advertised Duration: 281 int. 283 exh. Advertised Exhaust Duration: 283 Advertised Intake Duration: 281 Assembly Lubricant Included: Yes Basic Operating RPM Range: 2,200 7,200 Cam Style: Hydraulic roller tappet Camshaft Gear Attachment: 3 bolt Camshaft Manufacturers Description: High RPM street strip camshaft for use with FAST LSX intake. Requires programmer. Computer Controlled Compatible: Yes Duration at 050 inch Lift: 228 int. 230

Specifications

Advertised Duration: 281 int./283 exh.
Advertised Exhaust Duration: 283
Advertised Intake Duration: 281
Assembly Lubricant Included: Yes
Basic Operating RPM Range: 2,200-7,200
Cam Style: Hydraulic roller tappet
Camshaft Gear Attachment: 3-bolt
Camshaft Manufacturers Description: High RPM street/strip camshaft for use with FAST LSX intake. Requires programmer.
Computer-Controlled Compatible: Yes
Duration at 050 inch Lift: 228 int./230 exh.
Exhaust Duration at 050 inch Lift: 230
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.573 in.
Gaskets Included: No
Grind Number: XR281HR
Intake Duration at 050 inch Lift: 228
Intake Valve Lift with Factory Rocker Arm Ratio: 0.571 in.
Lifter Style: Hydraulic roller
Lifters Included: Yes
Lobe Separation (degrees): 112
Locks Included: Yes
Outside Diameter of Outer Spring (in): 1.055 in.
Pushrods Included: No
Quantity: Sold as a kit.
Retainers Included: Yes
Rocker Arms Included: No
Timing Chain and Gears Included: No
Valve Lift with Factory Rocker Arm Ratio: 0.571 int./0.573 exh.
Valve Springs Included: Yes
Valve Springs Required: Yes
Valve Stem Seals Included: Yes
Title: K54-428-11 CamShaft Kit, LS1 XR281HR-12
Engine Make/Size: Chevy Small Block (262-400)
RPM Range: 2200-7000
Usage: Street/Performance
Exh. Duration @ .050 in. (Deg): 230
Exh. Duration Advertised (Deg): 283
Exhaust Valve Lift (in.): 0.573
Int. Duration @ .050 in. (Deg): 228
Int. Duration Advertised (Deg): 281
Intake Valve Lift (in.): 0.571
Lifter Type: Hydraulic Roller


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2000 - 2009 Chevrolet Tahoe Z71
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2002 - 2013 GMC Sierra 1500 WT, Denali
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2006 GMC Yukon XL 1500 SL
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2008 - 2009 Pontiac G8 Base, GT
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2005 - 2007 Pontiac Grand Prix GT
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2005 - 2008 Pontiac Grand Prix GXP, Base
2004 - 2006 Pontiac GTO Base
2006 - 2009 Saab 9-7x 5.3i, 4.2i
2008 - 2009 Saab 9-7x Aero
2005 Saab 9-7x Linear, Arc
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 46946500682

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4.5 ★★★★★
Based on 28 reviews
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Product Reviews
D
Verified Purchase
Danica Mandic
Cuba, US
★★★★★ 5
Soft comfortable very good pillow
Size: King (Pack of 1), Color: White
I really love my new pillow it's great and comfortable. Yes, it has a little smell, but if you wash the pillowcase and put the pillow on the window for a day you won't notice anything anymore.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
Z
Verified Purchase
Zachery Jeffries
Alexandria, US
★★★★★ 5
Best place for head
Size: Queen (Pack of 1), Color: White
Do you love not getting sleep and sweating all over your pillow at night when you are asleep? If so then don't buy this pillow! If you want a good nights sleep and cool pillow like me this is the one. Ive always been ehh towards spending so much on a pillow but its 100% worth it, I sleep so much better and it forms to my head and keeps me cool at night. Great support even for my big head and comes with a bag of extra stuffing if you want to have a little more firmer pillow. Highly recommend
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026
L
Verified Purchase
Loves_2_read
Phoenix, US
★★★★★ 3
Oversized
Size: Queen (Pack of 2), Color: White
I have chronic neck pain. I am forever buying new pillows. Sometimes I think I found the perfect pillow but then three months later they’re losing their loft. I thought I would give these pillows to try since the stuffing is removable. Now these pillows are really oversized. To the point where I thought that they had sent me king-size pillows but I double checked the packaging and they were Queen. I ended up having to buy king-size pillowcases for them because they just barely fit in the queen size and the pillowcases would always end up pulling back from the edge. So that’s a negative one star there. Now I’ve been sleeping on these pillows for a while and they have held up well. I did end up removing some of the stuffing because it was just too much. I’m a side sleeper and when I use this pillow, it does a good job of keeping my neck in alignment. However, the pillow tends to migrate up as I sleep. Or I tend to slip down off the pillow, either or. So that’s why I’ve removed a second star. Maybe if I removed more stuffing that wouldn’t happen, but then I feel like the loft would be too little. I will say that these provide great support when sitting up in bed reading or watching TV. So would I buy them again? Probably not. Am I going to keep using them? Yes
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 23, 2025
N
Verified Purchase
Nick
Lowell, US
★★★★★ 5
Amazing - Stop Scrolling and Buy This Pillow
Size: Queen (Pack of 1), Color: White
I have been an Amazon customer ever since the very beginning, and this is my first review. Not because I haven’t purchased tons of amazing things (and a few bad ones), just never felt the need. However, I researched pillows for longer than I care to admit, and decided on this one. I’ve had it for about six months and absolutely love it. No lie, I genuinely look forward lying my big head on it after a long day. I am a side sleeper, but flip flop all around through the night and it’s great in every position. Pros: Stays nice and cool, which is soothing regardless of the time of year. Has a sort of quilted textured pattern on the zip up cover, gives it a luxury feel, that breaths nicely even when a pillow case is added. The fill is fully adjustable to your preference. I knew it came with extra filling but was worried it would not be enough. Wrong. It was very full and I ended up taking some out until it was perfect. It comes vacuum sealed and suggests it may take some time to fully take shape. However, I found it to be about 90% almost instantly and was sleeping on it a couple hours later. There was no unpleasant scent sometimes associated with memory foam items. The foam itself is very nice, a mix of what appears to be shredded and cotton candy cloud like. Very brilliant idea, as it is somehow supportive, soft and firm all at once. The affordability of this pillow compared to some of the others in this category can’t be overstated. Oh, and the packaging was very thoughtfully and securely done. If you are like me, an over thinker, I would suggest just taking this for a spin. It’s amazing. I’m not a bot, or working for the company. I’m just truly satisfied, love this pillow, and have been sleeping great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026
K
Verified Purchase
k25
Carnegie, US
★★★★★ 5
It's the perfect pillow!
Size: Queen (Pack of 1), Color: White
I purchased this pillow specifically for its customizable fill feature, which allows you to add or remove stuffing to suit your personal comfort needs. Due to the unique curvature of my cervical spine—forward at the neck rather than backward—I require a soft, semi-flat pillow rather than one that is thick or firm. Additionally, I often experience ear discomfort by morning, so a gentler surface is essential. Upon adjusting the fill, I was pleasantly surprised by the generous amount of stuffing included. There was enough to fill an additional pillowcase, and I estimate it could easily create four to five more pillows. The ability to modify the pillow’s firmness at any time is an outstanding feature that makes it adaptable for a wide range of preferences and sleep styles. This pillow has exceeded my expectations in both comfort and versatility. I highly recommend it to anyone seeking a personalized sleep experience.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 1, 2026

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