Sprockets Bolt size for the standard kit rear sprocket

Discussion in 'Transmission / Drivetrain' started by layboomo, Jun 1, 2009.

  1. layboomo

    layboomo New Member

    Hi can anybody tell me the size and length of the rear sprocket bolts in the standard 80cc kit. I want to use upgraded hardware there and I'd like to get it before my kit arrives. Thanks......it's from motorizedbikeparts.com if that matters.

  2. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

    My Grubee and old raw/PK kits use 6 mm bolts that are 1 3/4" long on
    the threaded section
    they are the same thread as the engine mounting studs, etc

    they are a little long and could be as short as 1 1/2" and still get 2 nuts on the inside
    and you know that 2 nuts are always better than one :devilish:

    You can use 1/4" of course which are a hair larger and would be easier to find
    25.4 mm = One Inch

    Last edited: Jun 1, 2009
  3. layboomo

    layboomo New Member

    Thankyou very much for the reply!
  4. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

    The pleasure is all mine my friend.....500 posts and 57 points :devilish: what a milestone!

    Get some sexy button head allen bolts to dress it up a bit!
    Last edited: Jun 1, 2009
  5. Junster

    Junster Member

    I used 1/4" stainless with nylock nuts they worked really well. And like Forbisher said 1 3/4" long.

  6. fetor56

    fetor56 Guest

    Wait till u get your kit & replace everything then;when in doubt boot it out.