2219 products

  • Cusco [15-25 WRX, 08-21 STI, 10-14 LegacY] Reinforced Differential Carrier | 6A1-489-A
    Up to $29 off
    In Stock

    Cusco Reinforced Differential Carrier

    Fits: 15-26 WRX, 08-21 STI, 10-14 Legacy

    Only 3 left
    Regular price $156.00
    Sale price $156.00 Regular price $185.00
  • Perrin [02-25 WRX, 04-21 STI, 05-09 LGT, 04-08 FXT] Transmission Mount | PSP-DRV-150
    Up to $52.80 off

    Perrin Transmission Mount

    Fits: 02-25 WRX, 04-21 STI, 05-09 LGT, 04-08 FXT

    Regular price $299.20
    Sale price $299.20 Regular price $352.00
  • Grimmspeed 02-25 WRX/STI / LGT/ FXT Pitch Stop Mount Black | 122005

    Grimmspeed 02-25 WRX/STI / LGT/ FXT Pitch Stop Mount Black | 122005

    Regular price $148.00
    Sale price $148.00 Regular price $148.00
  • COBB [15 - 26 WRX] Shifter Bushing | 244300 - JDMuscleShifter Bushingscobb244300

    In Stock

    COBB Shifter Bushing

    Fits: 15-26 WRX

    Regular price $49.00
    Sale price $49.00 Regular price $49.00
  • ACT [06-25 WRX, 05-12 LGT, 06-08 FXT] Heavy Duty Street Sprung Clutch Kit w/ Flywheel | SB11-HDSS
    Up to $282 off
    In Stock

    ACT Heavy Duty Street Sprung Clutch Kit w/ Flywheel

    Fits: 06-25 WRX, 05-12 LGT, 06-08 FXT

    Regular price $1,204.00
    Sale price $1,204.00 Regular price $1,486.00
  • Kartboy Short Shifter and Bushing Combo Subaru Impreza RS 1998-2001 / WRX 2002-2007 | KB-002-RS-COMBO

    In Stock

    Kartboy Short Shifter and Bushing Combo

    Fits: 98-01 Impreza RS, 02-07 WRX

    Regular price $155.00
    Sale price $155.00 Regular price $0.00
  • Perrin [02 - 26 WRX/STI, LGT, FXT] Pitch Stop Mount Hyper Pink - JDMusclePitch Stop MountsperPSP-DRV-101HP
    Up to $29.25 off
    In Stock

    Perrin Pitch Stop Mount Hyper Pink

    Fits: 02-26 WRX/STI, LGT, FXT

    Only 10 left
    Regular price $87.75
    Sale price $87.75 Regular price $117.00
  • COBB [02 - 26 WRX, 04 - 21 STI] Pitch Stop Mount Black | 862001 - JDMusclePitch Stop Mountscobb862001

    In Stock

    COBB Pitch Stop Mount Black

    Fits: 02-26 WRX, 04-21 STI

    Regular price $130.00
    Sale price $130.00 Regular price $130.00
  • Verus [06-25 WRX, 05-09 LGT] Forged Clutch Fork | A0163A

    Verus Forged Clutch Fork | A0163A

    Fits: 06-25 WRX, 05-09 LGT

    Regular price $198.00
    Sale price $198.00 Regular price $197.95
  • Perrin [02-21 WRX, 04-21 STI, 13-22 BRZ, 13-16 FRS, 17-21 GT86, 2022 GR86] V2 Engine Mounts | PSP-DRV-055
    Up to $92.25 off
    In Stock

    Perrin V2 Engine Mounts

    Fits: 02-25 WRX, 04-21 STI, 13-25 BRZ, 13-16 FRS, 17-20 GT86, 22-25 GR86

    Regular price $276.75
    Sale price $276.75 Regular price $369.00
  • Competition Clutch 06-17 WRX Stage 2 Organic Sprung Clutch Kit | 15021-2100
    Up to $80 off

    Competition Clutch Stage 2 Organic Sprung Clutch Kit

    Fits: 06-17 WRX, 05-09 LGT

    Regular price $485.00
    Sale price $485.00 Regular price $565.00
  • Perrin [15-25 WRX] Short Shift Adapter | PSP-INR-201
    Up to $33 off
    In Stock

    Perrin Short Shift Adapter

    Fits: 15-26 WRX

    Regular price $99.00
    Sale price $99.00 Regular price $132.00
  • Perrin [22 - 25 WRX, 20 - 23 OBXT, 22 - 23 Wilderness, 14 - 18 FXT] CVT Trans Mount Support| PSP - DRV - 161 - JDMuscleTransmission MountperPSP-DRV-161
    Up to $14.50 off
    In Stock

    Perrin CVT Trans Mount Support

    Fits: 22-26 WRX, 20-25 OBXT, 14-25 FXT, 13-25 Crosstrek

    Only 9 left
    Regular price $43.50
    Sale price $43.50 Regular price $58.00
  • Grimm Speed [02-25 WRX/STI] Race Version Pitch Stop Mount-Red | 122009

    Grimm Speed Race Version Pitch Stop Mount-Red | 122009

    Fits: 02-25 WRX/STI

    Regular price $148.00
    Sale price $148.00 Regular price $148.00
  • ACT 04-21 STI / 07-09 Legacy GT Spec. BHeavy Duty Performance Street Disc Clutch Kit | SB10-HDSS
    Up to $195 off
    In Stock

    ACT 04-21 STI / 07-09 Legacy GT Spec. BHeavy Duty Performance Street Disc Clutch Kit | SB10-HDSS

    Regular price $833.00
    Sale price $833.00 Regular price $1,028.00
  • ACT [04-21 STI / 07-09 LGT] Spec B Xtreme Duty Performance Street Disc Clutch Kit | SB10-XTSS
    Up to $205 off
    In Stock

    ACT Spec B Xtreme Duty Performance Street Disc Clutch Kit

    Fits: 04-21 STI, 07-09 LGT

    Regular price $875.00
    Sale price $875.00 Regular price $1,080.00

A Build That Handles Real Power

When your horsepower increases, your factory components can become a limitation. Buying a well-matched performance drivetrain setup lessens drivetrain loss, improves throttle response, and maintains traction. An upgraded clutch isn’t just about a drive being smoother. It increases holding capacity, and lightweight flywheels improve rev response. The best part? Strengthened axles give confidence, especially under hard launches.

For vehicles equipped with an all-wheel drivetrain, balanced torque distribution and reinforced components are critical. Differentials and driveshaft upgrades maintain stability while putting down power efficiently.

Upgrade Strength, Precision & Reliability

A complete performance drivetrain upgrade isn’t just about handling more power, it’s about refining how that power feels. Enhanced bushings, mounts, and hardware reduce flex and vibration, creating a tighter, more connected driving experience.

Components like a performance clutch kit or reinforced rear driveshaft improve durability under aggressive driving conditions. When properly selected, these upgrades work together to reduce wheel hop, improve engagement feels, and maximize traction. At JDMuscle, we source drivetrain components from trusted brands known for track-tested reliability and street-proven longevity.

Whether you’re planning a mild bolt-on setup or a fully built motor, upgrading your performance drivetrain ensures your vehicle is ready for the next level. 

FAQs

What does the drivetrain include?

The drivetrain includes all components that transfer power from the engine to the wheels. So that means: your clutch, transmission, driveshaft, axles, and differentials are all part of the drivetrain.

How do I know if I need drivetrain upgrades?

If you’ve increased horsepower or torque, experience clutch slip or drivetrain vibration, or plan to launch your vehicle explosively, upgrading your drivetrain components is a must.

Do you offer fast shipping?

Of course! JDMuscle ships the same day on most in-stock items, and that includes Saturdays too! So you can get your parts quickly and keep your build moving.

What if the part doesn’t fit my vehicle?

Sometimes, no matter how much you research, the right parts aren’t what you’ve ordered. To make this process easier, we do offer a Garage feature where you can see if the part you’ve ordered is what you need for your car model. But we also offer an easy return policy and responsive customer support to make exchanges or returns simple and stress-free!