Gearbox details:

• 16 tooth sprocket
• Sprocket OD: 87.4mm (3.43 in)
• Gear shaft ID: 20mm (0.787 in)
• Opposite side ID: 16.8mm (0.662 in)
• OD of gearbox: 130mm (5.14 in)
• (2) studs 91mm (3.58 in) apart center-to-center
• (2) threaded holes in side of case

• This 150cc external reverse gearbox assembly is the reverse assembly unit used on all Hammerhead go-karts with ONLY Forward and Reverse. Will not work on 150cc vehicles that have a Forward, Neutral, and Reverse gearing setup.

  Works with the following Hammerhead models:

  • GT150
  • SS150
  • Standard Hammerhead
  • Junior Hammerhead
  • UM150
  • LM150. 
  • Carter Talon series with external reverse
  • 6.000.157 

  • If your buggy has separate F N R (Forward, Neutral, and Reverse) gears, the vehicle has an internal reverse, and this reverse assy will not work with those vehicles.

    This reverse gearbox assembly was used in a variety of Hammerhead vehicles, including 1st generation GTS models, all GT150 models, SS150, Standard 150, JR 150, and various other non-Hammerhead brands such as Carter Bros, Kinroad, SUNL, Massimo, Roketa, and more.

    Hammerhead Part #6.000.019 is not available anymore from Hammerhead, but this product will replace 6.000.019 when used with the included bracket kit to retrofit.

    Hammerhead Part #s 8.010.124,  8.010.125, 9.030.007 are all included with this assembly and are NOT sold separately from Hammerhead or other vendors.

    This product is the same as the following vehicle specific part #s (can also apply to vehicles not listed here):

    Hammerhead part # 6.000.157
    Old TJ Power Sports part # 6.000.019

    See pictures for closer details on the description. 

    Shipping details:

    Do you need your gear box fast?  If you order before 3:00 pm CST, Monday thru Friday, your order goes out the same day.  Buy now!