Permanent fix for that leaking rear main seal
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Permanent fix for that leaking rear main seal
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Permanent fix for that leaking rear main seal. Includes recommended installation tool and Dirko sealant to complete the job.
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This product was last offered at the strikethrough price on
03-16-2026
"Dual pulley" gains without the hassle! Easily increase supercharger RPM by 22% and support up to 550HP.
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For use with OEM (63.25mm) Supercharger Pulley.
"Stage 2" Software Required for Compatibility
This product was last offered at the strikethrough price on
05-02-2026
Provides broad range control of destructive crankshaft torsional vibration for optimum horsepower and durability
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Spin the supercharger faster without affecting the accessory drive system
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This product was last offered at the strikethrough price on
05-02-2026
Increases boost for "dual pulley" tune power levels without replacing the press-on supercharger pulley for an easier install.
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Requires stage 2 dual pulley ECU tune
Permanent fix for that leaking rear main seal
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Permanent fix for that leaking rear main seal. Includes recommended installation tool and Dirko sealant to complete the job.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Includes a OE Crankshaft Pulley with the necessary install hardware.
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This product was last offered at the strikethrough price on
05-02-2026
Eliminates the problematic two-piece design and rubber isolator found in the stock crank pulley while reducing the mass of the motor's rotating assembly.
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*To be used with 'Stage 2' software or software specific to a supercharger crank pulley upgrade*
Eliminates the problematic two-piece design and rubber isolator found in the stock crank pulley while reducing the mass of the motor's rotating assembly.
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*To be used with 'Stage 2' software or software specific to a supercharger crank pulley upgrade*
Increase supercharger rotational speed to provide more boost to your engine
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*To be used with Stage 2 software - Stage 2+ software necessary if used in conjunction with a supercharger pulley upgrade*
Increase supercharger rotational speed to provide more boost to your engine
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*Stage 2 software required after install. See ES4266021
Includes Crank Pulley Bolt
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This product was last offered at the strikethrough price on
05-29-2026
Also referred to as the rear main seal
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Larger diameter pulley increases the speed at which the supercharger spins, increasing the boost pressure output
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*NOTE: This kit must be used with appropriate "Stage 2" performance software.