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Product availability may vary, and some items may be on backorder from the manufacturer. You can contact us via the Contact Page or email us at info@holyhorsepower.co.
Product availability may vary, and some items may be on backorder from the manufacturer. You can contact us via the Contact Page or email us at info@holyhorsepower.co.

STILLEN

Steve Millen Racing

STILLEN® founder Steve Millen has been racing across the globe as a professional driver for over 30 years. From Formula Fords in Singapore, Rally Cars in Africa, Trucks in football stadiums, to Nissan Prototypes at Le Mans and the 24 Hours of Daytona; these are just some of Steve's victory credits. Steve captured the prestigious IMSA GT Driver's Championship in both 1992 and 1994 driving his Cunningham Racing prepared Nissan 300ZX Twin Turbo racecar. His lengthy list of wins has made him "The All Time Winningest Driver in IMSA GT History" a title that may remain intact for decades to come.

STILLEN - Who We Are

Steve Millen’s racing experience has influenced every aspect of STILLEN’s business. A fundamental part of success in racing rests in the ability to continually refine performance by a program of modification and testing; throughout the years, this has been Steve Millen's forte. Steve has been sought after for testing by such enthusiast magazines as Road & Track where you will often see his name or byline when they are testing the most powerful and exotic sports cars in the world. STILLEN builds and sell parts that are tested and proven to work following a regiment of testing and refinement;  Professional product evaluation in real-world driving situations gives STILLEN a distinct advantage. Car & Driver, Road & Track, Motor Trend, Automobile, AutoWeek, /Drive, DSport, The Smoking Tire, and Super Street have all reviewed and tested STILLEN products and project vehicles, and provided rave reviews

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  • 2003-2006 Nissan 350Z [Z33] Power Hood [Fiberglass Series 1] - 1035007
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    2003-2006 Nissan 350Z [Z33] Power Hood [Fiberglass Series 1] - 1035007

    STILLEN
    $2,076.63
    $2,076.63 - $2,076.63
    $2,076.63
    $1,689.75
    $1,689.75 - $1,689.75
    $1,689.75
    In stock

    Product Features Series 1 Fiberglass Power Hood Clears STILLEN Supercharger Ready For Final Prep and Painting Uses Stock Hardware for Mountin...

    View full details
    $2,076.63
    $2,076.63 - $2,076.63
    $2,076.63
    $1,689.75
    $1,689.75 - $1,689.75
    $1,689.75
    Save 19% Save %
  • 2003-2006 Nissan 350Z [Z33] Power Hood [Fiberglass Series 2] - 1035008
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    2003-2006 Nissan 350Z [Z33] Power Hood [Fiberglass Series 2] - 1035008

    STILLEN
    $2,076.63
    $2,076.63 - $2,076.63
    $2,076.63
    $1,689.75
    $1,689.75 - $1,689.75
    $1,689.75
    In stock

    Product Features Series 2 Fiberglass Power Hood Aggressive Styling Clears STILLEN Supercharger Ready For Final Prep and Painting Uses Stock H...

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    $2,076.63
    $2,076.63 - $2,076.63
    $2,076.63
    $1,689.75
    $1,689.75 - $1,689.75
    $1,689.75
    Save 19% Save %
  • 2011-2013 Infiniti M37 / 2014-2018 Infiniti Q70 Stainless Steel Cat-Back Exhaust System - 504437
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    2011-2013 Infiniti M37 / 2014-2018 Infiniti Q70 Stainless Steel Near Cat-Back Exhaust System - 504437

    STILLEN
    $1,728.46
    $1,728.46 - $1,728.46
    $1,728.46
    $1,591.71
    $1,591.71 - $1,591.71
    $1,591.71
    In stock

    Product Features Near Cat-Back Exhaust System 304 Stainless Steel Construction Polished Stainless Tips, End Pipes and Mufflers Mild at Idle/Cruis...

    View full details
    $1,728.46
    $1,728.46 - $1,728.46
    $1,728.46
    $1,591.71
    $1,591.71 - $1,591.71
    $1,591.71
    Save 8% Save %
  • Save 8% Save %

    2006-2010 Infiniti M35 Stainless Steel Near Cat-Back Exhaust System - 504435

    STILLEN
    $1,701.58
    $1,701.58 - $1,701.58
    $1,701.58
    $1,566.96
    $1,566.96 - $1,566.96
    $1,566.96
    In stock

    Product Features Near Cat-Back Exhaust System 304 Stainless Steel Construction Polished Stainless Tips, End Pipes and Mufflers Mild at Idle/Cruis...

    View full details
    $1,701.58
    $1,701.58 - $1,701.58
    $1,701.58
    $1,566.96
    $1,566.96 - $1,566.96
    $1,566.96
    Save 8% Save %
  • 2006-2010 Infiniti M45 Stainless Steel Near Cat-Back Exhaust System - 504445
    Save 8% Save %

    2006-2010 Infiniti M45 Stainless Steel Near Cat-Back Exhaust System - 504445

    STILLEN
    $1,701.58
    $1,701.58 - $1,701.58
    $1,701.58
    $1,566.96
    $1,566.96 - $1,566.96
    $1,566.96
    In stock

    Product Features Near Cat-Back Exhaust System 304 Stainless Steel Construction Polished Stainless Tips, End Pipes and Mufflers Mild at Idle/Cruisi...

    View full details
    $1,701.58
    $1,701.58 - $1,701.58
    $1,701.58
    $1,566.96
    $1,566.96 - $1,566.96
    $1,566.96
    Save 8% Save %
  • 2023 Nissan Z | STILLEN Cat Back Exhaust "Competition Series" SKU 504500, 504501, 504502
    Save up to 5% Save %

    2023 Nissan Z | STILLEN Cat Back Exhaust "Competition Series" SKU 504500, 504501, 504502

    STILLEN
    $1,522.74
    $1,522.74 - $1,522.74
    $1,522.74
    $1,453.64 - $1,626.69
    $1,453.64 - $1,626.69
    $1,453.64
    In stock

      STILLEN is excited to release the cat-back exhaust system for the 2023 Nissan Z.  During the development of this exhaust system STILLEN engineer...

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    $1,522.74
    $1,522.74 - $1,522.74
    $1,522.74
    $1,453.64 - $1,626.69
    $1,453.64 - $1,626.69
    $1,453.64
    Save up to 5% Save %
  • Save up to 16% Save %

    2022+ HONDA CIVIC HATCHBACK STILLEN CAT-BACK EXHAUST - 504100/504101

    STILLEN
    $1,730.51
    $1,730.51 - $1,730.51
    $1,730.51
    $1,446.70 - $1,502.08
    $1,446.70 - $1,502.08
    $1,446.70
    In stock

    Are you ready to transform your driving experience and make a bold statement on the road? Look no further than the all-new STILLEN Cat-Back Exhaust...

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    $1,730.51
    $1,730.51 - $1,730.51
    $1,730.51
    $1,446.70 - $1,502.08
    $1,446.70 - $1,502.08
    $1,446.70
    Save up to 16% Save %
  • STILLEN 4-Piece Polyurethane Body Kit KB41000LS
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    2013 Ford Mustang 4-Piece Polyurethane Body Kit SKU# KB41000LS

    STILLEN
    $1,794.87
    $1,794.87 - $1,794.87
    $1,794.87
    $1,435.91
    $1,435.91 - $1,435.91
    $1,435.91
    In stock

    Kit Includes STILLEN Rear Wing (KB41023) STILLEN Side Skirts (KB41025) STILLEN Front Lip Spoiler (KB41722); Polyurethane Construction - Ready for P...

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    $1,794.87
    $1,794.87 - $1,794.87
    $1,794.87
    $1,435.91
    $1,435.91 - $1,435.91
    $1,435.91
    Save 20% Save %

  • 2019-2022 Ford Super Duty Tremor 4WD | 3 Inch Lift Kit | Rough Country 41370

    STILLEN
    $1,384.41 - $1,384.41
    $1,384.41
    $1,384.41 - $1,384.41
    $1,384.41
    In stock

    Superior Looks. Give your fourth-generation Ford Super Duty Tremor an impressive upgrade, front to back with Rough Country’s 3" Suspension Lift K...

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    $1,384.41 - $1,384.41
    $1,384.41
    $1,384.41 - $1,384.41
    $1,384.41
  • 2022-23 Toyota Tundra 3.5L Twin Turbo V6 STILLEN Cat-Back Exhaust 509356/509357
    Save up to 23% Save %

    2022+ Toyota Tundra 3.4L Twin Turbo V6 STILLEN Cat-Back Exhaust

    STILLEN
    $1,729.14 - $1,936.80
    $1,729.14 - $1,936.80
    $1,729.14
    $1,384.41 - $1,488.24
    $1,384.41 - $1,488.24
    $1,384.41
    In stock

    2022-23 Toyota Tundra 3.4L Twin Turbo V6 STILLEN Cat-Back Exhaust 509356/509355   Unlock the true power and performance of your 2022+ Toyota Tundra...

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    $1,729.14 - $1,936.80
    $1,729.14 - $1,936.80
    $1,729.14
    $1,384.41 - $1,488.24
    $1,384.41 - $1,488.24
    $1,384.41
    Save up to 23% Save %
  • Save 5% Save %

    2009-2015 Nissan GT-R [R35] Aero Side Skirts (Urethane) - GTRKB12829

    STILLEN
    $1,423.75
    $1,423.75 - $1,423.75
    $1,423.75
    $1,354.81
    $1,354.81 - $1,354.81
    $1,354.81
    In stock

    Product Features Side Skirt Set (Rocker Panels) - Driver and Passenger Sides Polyurethane Construction - Painted Matte Black Also Paintable for C...

    View full details
    $1,423.75
    $1,423.75 - $1,423.75
    $1,423.75
    $1,354.81
    $1,354.81 - $1,354.81
    $1,354.81
    Save 5% Save %
  • STILLEN 4-Piece Polyurethane Body Kit KB41500L
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    2010-2012 Ford Mustang 4-Piece Polyurethane Body Kit SKU# KB41500L

    STILLEN
    $1,681.45
    $1,681.45 - $1,681.45
    $1,681.45
    $1,345.16
    $1,345.16 - $1,345.16
    $1,345.16
    In stock

    Kit Includes STILLEN Rear Valance (KB410210) STILLEN Side Skirt Set (KB41025) STILLEN Front Lip (KB41522); Polyurethane Construction - Ready for Pr...

    View full details
    $1,681.45
    $1,681.45 - $1,681.45
    $1,681.45
    $1,345.16
    $1,345.16 - $1,345.16
    $1,345.16
    Save 20% Save %
  • 2013-2018 Nissan Rogue Stainless Steel Cat-Back Exhaust System - 509522
    Save 8% Save %

    2013-2019 Nissan Rogue Stainless Steel Cat-Back Exhaust System - 509522

    STILLEN
    $1,432.90
    $1,432.90 - $1,432.90
    $1,432.90
    $1,319.53
    $1,319.53 - $1,319.53
    $1,319.53
    In stock

    DUE TO POPULAR DEMAND WE ARE BRINGING THIS PART BACK INTO PRODUCTION. THESE EXHAUST SYSTEMS ARE CURRENTLY IN MANUFACTURING IN OUR SOUTHERN CALIFORN...

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    $1,432.90
    $1,432.90 - $1,432.90
    $1,432.90
    $1,319.53
    $1,319.53 - $1,319.53
    $1,319.53
    Save 8% Save %
  • STILLEN Stainless Steel Cat-Back Exhuast System - Dual Rear Exit 509558
    Save 13% Save %

    STILLEN Nissan Armada / Infiniti QX56 Stainless Steel Cat-Back Exhaust System - Dual Rear Exit SKU# '509558

    STILLEN
    $1,501.86
    $1,501.86 - $1,501.86
    $1,501.86
    $1,304.97
    $1,304.97 - $1,304.97
    $1,304.97
    In stock

    STILLEN Stainless Steel Cat-Back Exhuast System - Dual Rear Exit 509558

    $1,501.86
    $1,501.86 - $1,501.86
    $1,501.86
    $1,304.97
    $1,304.97 - $1,304.97
    $1,304.97
    Save 13% Save %
  • 2010-2016 Hyundai Genesis Coupe [BK38] Cat-Back Exhaust System - 508185
    Save 8% Save %

    2010-2016 Hyundai Genesis Coupe [BK38] Cat-Back Exhaust System - 508185

    STILLEN
    $1,407.30
    $1,407.30 - $1,407.30
    $1,407.30
    $1,295.97
    $1,295.97 - $1,295.97
    $1,295.97
    In stock

    Product Features 304 Stainless Steel Construction Polished Quad 3.5" Stainless Tips, End Pipes and Mufflers Mild note at idle; Cruising- Aggressiv...

    View full details
    $1,407.30
    $1,407.30 - $1,407.30
    $1,407.30
    $1,295.97
    $1,295.97 - $1,295.97
    $1,295.97
    Save 8% Save %
  • 2016-2021 Nissan Titan Cat back Exhaust - [5.6L] (NON-XD) 2WD/4WD - Polished Tip - 509560
    Save 8% Save %

    2016-2023 Nissan Titan Cat back Exhaust - [5.6L] (NON-XD) 2WD/4WD - Polished Tip - 509560

    STILLEN
    $1,339.74
    $1,339.74 - $1,339.74
    $1,339.74
    $1,233.75
    $1,233.75 - $1,233.75
    $1,233.75
    In stock

    Product Features Does NOT Fit: Titan XD Models Horsepower Gain: +43 WHP @ 4,100 RPM* Torque Gain: +61 TQ @ 3,800 RPM* Polished Dual Wall Engraved...

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    $1,339.74
    $1,339.74 - $1,339.74
    $1,339.74
    $1,233.75
    $1,233.75 - $1,233.75
    $1,233.75
    Save 8% Save %
  • 2016-2021 Nissan Titan Cat-Back Exhaust - [5.6L] (NON-XD) 2WD/4WD - Black Tip - 509561
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    2016-2023 Nissan Titan Cat-Back Exhaust - [5.6L] (NON-XD) 2WD/4WD - Black Tip - 509561

    STILLEN
    $1,339.74
    $1,339.74 - $1,339.74
    $1,339.74
    $1,233.75
    $1,233.75 - $1,233.75
    $1,233.75
    In stock

    Product Features Does NOT Fit: Titan XD Models Horsepower Gain:+43 WHP @ 4,100 RPM* Torque Gain:+61 TQ @ 3,800 RPM* Black Dual Wall Engraved Tip A...

    View full details
    $1,339.74
    $1,339.74 - $1,339.74
    $1,339.74
    $1,233.75
    $1,233.75 - $1,233.75
    $1,233.75
    Save 8% Save %
  • STILLEN Exhaust Nissan Titan
    Save 15% Save %

    2004-2015 Nissan Titan Stainless Steel Cat-Back Exhaust System - Dual Rear Exit - 509557

    STILLEN
    $1,415.62
    $1,415.62 - $1,415.62
    $1,415.62
    $1,203.28
    $1,203.28 - $1,203.28
    $1,203.28
    In stock

    Product Features Dual Rear Exit Cat-Back Exhaust System Manufactured Utilizing High Tolerance Stainless Steel Sophisticated Throaty Tone Mandrel ...

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    $1,415.62
    $1,415.62 - $1,415.62
    $1,415.62
    $1,203.28
    $1,203.28 - $1,203.28
    $1,203.28
    Save 15% Save %
  • 2017-2018 Infiniti Q60 STILLEN Side Skirts & Rear Corners- Matte Black - KB11236MB
    Save 5% Save %

    2017-2022 Infiniti Q60 Side Skirts & Rear Corners- Matte Black - KB11236MB

    STILLEN
    $1,258.12
    $1,258.12 - $1,258.12
    $1,258.12
    $1,197.20
    $1,197.20 - $1,197.20
    $1,197.20
    In stock

    Product Features Side Skirt Set (Rocker Panels) - Driver and Passenger Sides Matte Black Polyurethane Construction - Ready for Prep and Paint Ret...

    View full details
    $1,258.12
    $1,258.12 - $1,258.12
    $1,258.12
    $1,197.20
    $1,197.20 - $1,197.20
    $1,197.20
    Save 5% Save %
  • 2017-2021 Infiniti Q60 Rear Spoiler [Carbon Fiber] - CF11239
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    2017-2022 Infiniti Q60 Rear Spoiler [Carbon Fiber] - CF11239

    STILLEN
    $1,375.38
    $1,375.38 - $1,375.38
    $1,375.38
    $1,169.07
    $1,169.07 - $1,169.07
    $1,169.07
    In stock

    Product Features Designed by Stillen & Produced by Seibon Finish: Carbon Fiber Matches the Q60 body contours 2x2 Weaverear spoiler Overview...

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    $1,375.38
    $1,375.38 - $1,375.38
    $1,375.38
    $1,169.07
    $1,169.07 - $1,169.07
    $1,169.07
    Save 15% Save %
  • 1990-1996 STILLEN Type 3 NISSAN 300ZX Rear Spoiler - 1030059

    1990-1996 STILLEN Type 3 Nissan 300ZX Rear Spoiler - 1030059

    STILLEN
    $1,132.10 - $1,132.10
    $1,132.10
    $1,132.10 - $1,132.10
    $1,132.10
    In stock

    1990-1996 STILLEN Type 3 Nissan 300ZX Rear Spoiler - 1030059   For decades the STILLEN type 3 rear spoiler has been the most sought after rear spoi...

    View full details
    $1,132.10 - $1,132.10
    $1,132.10
    $1,132.10 - $1,132.10
    $1,132.10
  • Save 15% Save %

    2003-2004 Infiniti G35 Sedan - Power Hood [Fiberglass] - 1036507

    STILLEN
    $1,307.06
    $1,307.06 - $1,307.06
    $1,307.06
    $1,111.00
    $1,111.00 - $1,111.00
    $1,111.00
    In stock

    THIS ITEM HAS BEEN DISCONTINUED- PAGE LEFT FOR INFORMATIONAL PURPOSES ONLY. Product Features Fiberglass Power Hood Clears STILLEN Supercharg...

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    $1,307.06
    $1,307.06 - $1,307.06
    $1,307.06
    $1,111.00
    $1,111.00 - $1,111.00
    $1,111.00
    Save 15% Save %
  • 2009-2020 Nissan 370Z [Z34] Front Fascia - KB11121
    Save 5% Save %

    2009-2020 Nissan 370Z [Z34] Front Fascia - KB11121

    STILLEN
    $1,132.65
    $1,132.65 - $1,132.65
    $1,132.65
    $1,077.81
    $1,077.81 - $1,077.81
    $1,077.81
    In stock

    Product Features Full Front Fascia - Large Openings For Intercoolers, Oil and Transmission Coolers Air Diversion Path Built-In - Directs Airf...

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    $1,132.65
    $1,132.65 - $1,132.65
    $1,132.65
    $1,077.81
    $1,077.81 - $1,077.81
    $1,077.81
    Save 5% Save %
  • 2017-2018 Infiniti Q60 STILLEN Side Skirts & Rear Corners [Unpainted] - KB11236
    Save 5% Save %

    2017-2022 Infiniti Q60 Side Skirts & Rear Corners [Unpainted] - KB11236

    STILLEN
    $1,023.14
    $1,023.14 - $1,023.14
    $1,023.14
    $973.61
    $973.61 - $973.61
    $973.61
    In stock

    Product Features Side Skirt Set (Rocker Panels) - Driver and Passenger Sides Unpainted Polyurethane Construction - Ready for Prep and Paint Retai...

    View full details
    $1,023.14
    $1,023.14 - $1,023.14
    $1,023.14
    $973.61
    $973.61 - $973.61
    $973.61
    Save 5% Save %

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