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COMP CAMSPART NUMBER: 249-CL54-428-11

CAM / LIFTER KIT LS1 XR281HR-12

Name: CAM / LIFTER KIT LS1 XR281HR-12
Brand: COMP CAMS
SKU: 249-CL54-428-11
Price: 595.95 USD
Availability: InStock

^$595⁹⁵

Ships on Oct 28, 2026

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XFI RPM Hi-Lift Hydraulic Roller Camshafts

Lift: .571''/.573''
Duration: 281°/283°
Lobe Separation Angle: 112°

RPM Range: 2200-7200

High RPM street/strip camshaft for use with FAST LSX intake. Requires programmer.

Operating Range:	2200-7200 RPM
Duration Advertised:	281° Intake / 283° Exhaust
Duration @ .050' Lift:	228° Intake / 230° Exhaust
Valve Lift w/1.7 Rockers:	.571' Intake / .573' Exhaust
Lobe Separation Angle:	112°

GM, 4.8, 5.3, 5.7, 6.0, 6.2, 7.0, LS1, LS2, LS3, LS4, LS6, LS7, LSA, LS9, Camaro, Silverado, LS Swap, 383, 350, SBC, Chevelle, Yukon, L92, LM7, 325, GMC, Trailblazer, Corvette, GM LS, GEN III, GEN 3, GEN IV, GEN 4, DOD, AFM, VVT, BTR, Texas Speed

High RPM street/strip camshaft for use with FAST LSX intake. Requires programmer.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

Ever since its introduction, GM's LSX/Gen III engine has quickly become the ''preferred choice'' among many engine builders and performance enthusiasts. Right from the factory, the GM LSX/Gen III engine boasts a surprisingly efficient induction design, reduced weight and impressive power output. As the leading developer of high performance LSX/Gen III valve train technology, Comp Cams has engineered a full line of products proven to release the incredible horsepower and torque hidden inside while never sacrificing ever-critical reliability.

Features:

Newest and quickest lobe profiles; provide a terrific increase in performance
Tuned for use in EFI applications where extra air flow signal through the carburetor is not required (feature wider lobe separation without loss of responsiveness)
Work well with aftermarket cylinder heads & feature high lift

Part TypeCamshaft Kit

Product LineComp Cams XFI Roller Camshafts For GM LS-Series/Gen III Engines

BrandCOMP CAMS

Package Height3.0

Package Width6.0

Package Length25.0

Weight12.36 PG

Part CategoryPerformance Parts

Exh. Duration @ .050 In. (Deg)230

Cam StyleHydraulic roller tappet

Grind NumberXR281HR

Exh. Duration Advertised (Deg)283

Locks IncludedNo

Engine Make/SizeChevy Small Block (262-400)

Retainers IncludedNo

Intake Valve Lift With Factory Rocker Arm Ratio (I0.571

Int. Duration @ .050 In. (Deg)228

Assembly Lubricant IncludedYes

Basic Operating Rpm Range2,200-7,200

Pushrods IncludedNo

Gaskets IncludedNo

Rocker Arms IncludedNo

Intake Valve Lift0.571 in (14.503 mm)

Computer-Controlled CompatibleYes

Int. Duration Advertised (Deg)281

Lobe Separation (Deg)112

Rpm Range2200-7200

Lifter StyleHydraulic roller

Advertised Duration281 int./283 exh.

Exhaust Valve Lift With Factory Rocker Arm Ratio (0.573

Valve Springs IncludedNo

UsageStreet/Performance

Valve Lift With Factory Rocker Arm Ratio0.571 int./0.573 exh.

Camshaft Gear Attachment3-bolt

QuantitySold as a kit

Valve Stem Seals IncludedNo

Exhaust Valve Lift0.573 in (14.554 mm)

Advertised Intake Duration281

Intake Duration At 050 Inch Lift228

Exhaust Duration At 050 Inch Lift230

Timing Chain And Gears IncludedNo

Advertised Exhaust Duration283

Lifter TypeHydraulic Roller

Duration At 050 Inch Lift228 int./230 exh.

Valve Springs RequiredYes

Lifters IncludedYes

Vendor Part NumberCL54-428-11

Package Qty1

Package TypeEA

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Some parts are not legal for use in California or other states with similar laws / regulations

CAM / LIFTER KIT LS1 XR281HR-12

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