First Time Rider
Arm chair racerNew to the board
Hey guys, my US90 has an ATC 90 axle in it and I would like to install some modern 4 bolt hubs that have a more common 4x110mm bolt pattern than the 3 bolt ATC 90 hubs I have now.
I found a great deal on some new Durablue TRX400EX (not 450EX like in the title) hubs and wanted to confirm the diameter and spline count would match up to the ATC 90 axle. Attached is a photo from the seller of the box label for new hubs.
Last edited by SSLS1; 12-11-2014 at 01:34 PM. Reason: wrong hub model listed
1985 ATC 350X all original/OEM Honda parts
1972 US90 Dickson Designs 2" stretched tube chassis, 200x Forks, Piranha 150cc, VM26
1985 ATC70 Piranha 114cc BBK, Ported Race Head, TB300 Cam, Spangler's Exhaust
1985 ATC70 Piranha 150cc, VM26, Z40 cam, Ported head, Two Brothers Exhaust, 2" stretch
1970 Honda CT70125cc Mikuni 24, XR80 Forks, Aluminum Swingarm, Carbon Exhaust
1972 Honda CT70110cc e-start, Mikuni 20 carb, Carbon Exhaust, Aluminum Wheels
1993 Honda Z50R all original
Power User
Got the holeshot
Yes on an ATC90 axle.
No on a US90 axle.
Just Too Addicted
Arm chair racerJust too addicted
I too converted a "US90" to the later ATC90 series axle assembly, more options over the balloon tires. Another hub option is 400EX extended hubs....
"HJ"
’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
First Time Rider
Arm chair racerNew to the board
Thanks guys! ..... Yeah Harry, I have AMS Zipper rear tires and a Duro Street Fighter tire on the front of my US90 all riding on new 3 bolt aluminum Douglas wheels. But I'm thinking some nice aluminum race cut 4 bolt wheels and hubs would look sweet on my "Green Monster" 90. Then I can put the aluminum 3 bolt wheels on my ATC 70 with some 8" tires.Originally Posted by HairyJR
I too converted a "US90" to the later ATC90 series axle assembly, more options over the balloon tires. Another hub option is 400EX extended hubs....
"HJ"
1985 ATC 350X all original/OEM Honda parts
1972 US90 Dickson Designs 2" stretched tube chassis, 200x Forks, Piranha 150cc, VM26
1985 ATC70 Piranha 114cc BBK, Ported Race Head, TB300 Cam, Spangler's Exhaust
1985 ATC70 Piranha 150cc, VM26, Z40 cam, Ported head, Two Brothers Exhaust, 2" stretch
1970 Honda CT70125cc Mikuni 24, XR80 Forks, Aluminum Swingarm, Carbon Exhaust
1972 Honda CT70110cc e-start, Mikuni 20 carb, Carbon Exhaust, Aluminum Wheels
1993 Honda Z50R all original
Just Too Addicted
Arm chair racerJust too addicted
My bad for not clicking on your attached pic's of the Durablue hubs, shows there for an 400EX. You might want to edit your first post and correct the Durablue TRX450EX too TRX400EX. I do see a potential problem in that the larger diameter of the 4 lugs might limit which wheels that can be used, inside wheel diameter.
"HJ"
First Time Rider
Arm chair racerNew to the board
Thanks Harry, I changed the posting to 400EX but could not edit the title.
I want to still use 8" dia wheels to keep some resemblance to the original balloon tire look and keep some "tire sidewall suspension" since it has a rigid rear still.
I will pull a wheel and hub to take with me if I get a chance to meet with the seller in person to be sure the 4 bolt hub will fit within an 8" aluminum wheel. Thanks for the tip!
1985 ATC 350X all original/OEM Honda parts
1972 US90 Dickson Designs 2" stretched tube chassis, 200x Forks, Piranha 150cc, VM26
1985 ATC70 Piranha 114cc BBK, Ported Race Head, TB300 Cam, Spangler's Exhaust
1985 ATC70 Piranha 150cc, VM26, Z40 cam, Ported head, Two Brothers Exhaust, 2" stretch
1970 Honda CT70125cc Mikuni 24, XR80 Forks, Aluminum Swingarm, Carbon Exhaust
1972 Honda CT70110cc e-start, Mikuni 20 carb, Carbon Exhaust, Aluminum Wheels
1993 Honda Z50R all original
New to the board
Arm chair racerNew to the board
Yep, i used trx450r rear hubs and a billet atc70 front hub with 4/110 bolt pattern. I just had to use the correct size bearings and seals to work with my atc110 front axle.Hey guys, my US90 has an ATC 90 axle in it and I would like to install some modern 4 bolt hubs that have a more common 4x110mm bolt pattern than the 3 bolt ATC 90 hubs I have now.
I found a great deal on some new Durablue TRX400EX (not 450EX like in the title) hubs and wanted to confirm the diameter and spline count would match up to the ATC 90 axle. Attached is a photo from the seller of the box label for new hubs.
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