//ArrowChat Code
Results 1 to 4 of 4

Thread: 1st gen 250r front rotor diameter help

  1. #1
    Join Date
    Jul 2005
    Location
    Manheim, PA
    --
    5,742

    1st gen 250r front rotor diameter help

    Hello,

    I am looking for a small rotor to use on machine and wondered if anyone knows the diameter of the front rotor? I have rears and fronts from other years but this one it tiny and i think will work for project.

    LMK please

  2. #2
    Join Date
    Jan 2009
    Location
    ohio
    --
    1,749
    Click image for larger version. 

Name:	9D868375-0F62-4E46-80C6-217F6173C5EE.jpeg 
Views:	4 
Size:	1.37 MB 
ID:	270588
    I machined the inside out and redrilled a I think 300ex or 400ex frt rotor to use on a first gen R with cart wheels cause the oem one was to big dia. If I remember I can measure a first gen frt rotor tonight
    If its on the internet its got to be true they can't put any lie's on the internet

  3. #3
    Join Date
    Jun 2013
    Location
    Oceanside, CA.
    --
    610
    Just measured my '82 front disc, 6-3/32" (@ 157m ) OD 2" (@ 52m ) ID bore. '81 isn't a drilled disc like the '82.

    Click image for larger version. 

Name:	82 250r front disc.jpg 
Views:	5 
Size:	41.3 KB 
ID:	270590

    "HJ" Click image for larger version. 

Name:	oldfogey.jpg 
Views:	8 
Size:	1.2 KB 
ID:	270589
    ’84 YT60
    ’85 350x (423cc) with ’81 XL500 head conversion
    ’83 XR500 (628cc) converted 3 Wheel hybrid
    ’73 CB750 K3 converted 3 Wheel hybrid
    ’86 TRX250R chassis XR650L engine hybrid
    ’89 TRX250R (stock )
    ’90 LT500 Quadzilla
    ’85 FL350 Odysses ( water cooled head )
    Lost (sold) but not forgotten ’80 ATC 110 (205cc on alcohol ) ’83 200x ( 222cc ) ’83 200x ( 185s eng ) ’85 350x ( stock )
    added to the collection recently, (2) '70 US90 Aquarius Blue and '74 ATC90 Daytona Orange

  4. #4
    Join Date
    Jul 2005
    Location
    Manheim, PA
    --
    5,742
    Sweet, i think this will work on my project, now so check different caliper heights. Thanks so much!

//ArrowChat Integreation Code //