Shop 6.4L Hemi
Bestop Sun Safari Bikini (Mesh) (F&R): Jeep Wrangler JL 2018-2025 2.0L/3.6L
Bestop
$199.99
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Bestop JL Replacement Quarter Window RH Tan Twill Clear (REAR): Jeep Wrangler JL 2018-2025 2.0L/3.6L
Bestop
$249.99
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Bestop Replacement Windows (REAR): Jeep Wrangler JL 2018-2025 2.0L Turbo / 3.6L V6
Bestop
$139.99
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Bestop All Weather Trail Cover (Black Hard Top) (F&R): Jeep Wrangler JK/JL 2007-2026 2.0L/3.6L V6
Bestop
$219.99
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Moroso Billet Aluminum Air/Oil Separator Catch Can: Dodge Challenger 5.7L / 6.4L (2008-2023) - Black
Moroso
$212.99
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Bestop Rear Seat Covers Fold Down Arm Rest (REAR): Jeep Wrangler JL 2018-2023 2.0L Turbo/3.6L V6 Tan
Bestop
$299.99
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Bestop Front Seat Covers (Charcoal) (FRONT): Fits Jeep Gladiator/Wrangler 2018-2025
Bestop
$299.99
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Bestop Replacement Windows Quarter RH 4-Door Blk Vinyl Clear: Jeep Wrangler JL 2018-2026
Bestop
$119.99
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Bestop Element Upper Doors Black Diamond (FRONT): Jeep Gladiator 2021-2023 / Wrangler JL 2018-2025
Bestop
$549.99
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Bestop JL Replacement Quarter Window Left 2-Door Black Twill Clear (REAR): Jeep Wrangler 2018-2025 2.0L/3.6L
Bestop
$269.99
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Bestop Element Upper Doors Front Black Twill: Fits Jeep Gladiator/Wrangler JL 2018-2025
Bestop
$649.99
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Bestop Windshield Channel 1-Piece No-Drill Header (FRONT): Jeep Gladiator / Wrangler 2018-2026
Bestop
$99.99
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SuperPro Rear Lower Tension Arm Bushing Set: Dodge Durango / Jeep Grand Cherokee 11-21
Superpro
$57.99
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Bestop Halftop Conversion Kit Black Diamond (F&R): Jeep Wrangler JL 2018-2023 2.0L/3.6L
Bestop
$499.99
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Bestop Sunscreen Soft Top Cover (TOP): Jeep Wrangler / Gladiator 2018-2025 2.0L/3.6L
Bestop
$199.99
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Bestop Rear Seat Covers Tan Exc. 4Xe W/O Fold Down Arm Rest (REAR): Jeep Wrangler JL 2018-2023
Bestop
$299.99
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Bestop OE Replacement Window Quarter RH 4-Door (REAR): Jeep Wrangler JL 2018-2026
Bestop
$199.99
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Bestop Halftop Soft Top Black Diamond (F&R): Jeep Wrangler JL 2024-2025 2.0L Turbo / 3.6L V6
Bestop
$1,149.99
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Bestop Header Safari Cable Bikini Top (F&R): Jeep Wrangler JL 2024-2025 2.0L Turbo / 3.6L V6
Bestop
$249.99
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Bestop JL Replacement Quarter Window Tinted (REAR): Jeep Wrangler JL 2018-2025
Bestop
$119.99
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Bestop Front Seat Covers (F&R): Fits Jeep Gladiator / Wrangler JL 2018-2025
Bestop
$299.99
- Unit price
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Victor Reinz Timing Cover Set: Fits Most Dodge / Chrysler / Jeep / Ram Models (2003-2021)
Victor Reinz
$101.83
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Bestop Halftop Soft Top Premium Black Twill (F&R): Jeep Wrangler JL 2024-2025 2.0L/3.6L/6.4L
Bestop
$1,649.99
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Method Wheels 305 / NV / Double Black® | 18x9 | 6x5.5 | 18/5.75"
Method Wheels
$420.00
- Unit price
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Bestop JL Replacement Quarter Window (RH): Jeep Wrangler JL 2018-2025 2.0L/3.6L
Bestop
$269.99
- Unit price
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Bestop Rear Seat Covers Fold Down Arm Rest: Jeep Wrangler JL 2018-2023 2.0L/3.6L
Bestop
$299.99
- Unit price
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Bestop OE Replacement Quarter Window Tan Twill Tinted (LH REAR): Jeep Wrangler JL 2018-2025
Bestop
$189.99
- Unit price
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Bestop OE JL Replacement Windows Quarter Left Hand Black Vinyl Tinted (REAR): Jeep Wrangler JL 2018-2025 2.0L / 3.6L
Bestop
$119.99
- Unit price
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Bestop Replacement Windows Black Twill Tinted (F&R): Jeep Wrangler JL 2018-2025
Bestop
$269.99
- Unit price
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Bestop Ez-Fold Soft Tonneau Cover (8 Ft Bed): Fits Ram 2500/3500 2011-2025 5.7L/6.4L/6.7L
Bestop
$489.99
- Unit price
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Bestop Halftop Soft Top Black Diamond (F&R): Jeep Wrangler JL 2024-2025 2.0L/3.6L
Bestop
$1,149.99
- Unit price
- /per
Bestop JL Replacement Quarter Window Left 4-Door Black Vinyl Clear (F&R): Jeep Wrangler 2018-2025 2.0L/3.6L
Bestop
$119.99
- Unit price
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Bestop Door Mirror Cup Kit (FRONT): Jeep Gladiator 2020-26 / Wrangler JL 2018-26 / JK 2007-18 - Black
Bestop
$24.99
- Unit price
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Bestop Duster Deck Cover (Black Diamond) (REAR): Jeep Wrangler JL 2018-2023
Bestop
$179.99
- Unit price
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Bestop TrekStep Rear Step Passenger Side: Fits Ram 2500/3500 2019-2024
Bestop
$329.99
- Unit price
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Bestop Replacement Windows Black Vinyl Tinted (F&R): Jeep Wrangler JL 2018-2025 2.0L/3.6L
Bestop
$139.99
- Unit price
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Baja Designs Dual LP6 Auxiliary Light Kit: Jeep Wrangler (18-24) / Gladiator (20-24) w/ Upfitter
Baja Designs
$1,384.95
- Unit price
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Performance Upgrades for Your 6.4L 392 Hemi
The 6.4L 392 Hemi is a naturally aspirated powerhouse known for its strong forged internals and high-flow cylinder heads. Delivering robust power and torque from the factory, it provides an excellent platform for enthusiasts aiming to enhance performance while maintaining reliability. At FastHemis, you’ll find parts designed specifically to unlock the full potential of this Mopar favorite.
Why upgrade performance parts on your 6.4L Hemi?
Upgrading your 6.4L Hemi’s components can significantly improve power delivery, throttle response, and overall engine efficiency. Whether you want to increase airflow with cold air intakes or extract more power through long tube headers and exhaust systems, these bolt-on upgrades complement the engine’s strong factory foundation. Enhancements also help tailor your build to specific driving styles and performance goals.
- Improved air and exhaust flow for better combustion
- Enhanced throttle response and engine sound
- Supports future forced induction or camshaft upgrades
- Maintains the engine’s legendary durability and reliability
Popular upgrade paths for the 6.4L 392 Hemi
The 6.4L Hemi responds well to a variety of performance modifications that suit naturally aspirated and boosted builds alike. Common upgrades include supercharger and procharger kits for substantial power gains, long tube headers to reduce exhaust backpressure, and cold air intakes to increase airflow. Tuners and performance calibration tools are also essential to optimize these modifications and ensure smooth operation.
Choosing the right 6.4L Hemi parts at FastHemis
FastHemis offers a comprehensive selection of performance parts tailored to the 6.4L 392 Hemi. Whether you’re starting with bolt-ons or planning a full build, our inventory supports every stage of your project. Browse our collection to find supercharger kits, exhaust upgrades, intake systems, and tuning tools designed to maximize your engine’s capability while preserving its durability.