headstock size?

[zumanity]

are all headstock sizes the same on 125 pittys?
i want to get a new set of upside down forks but i need to know the standard size of the head stock so i know it will fit.
its a forks, bars and brakes all in one package.

 

[zumanity]

the one on mine measures 140mm.
is that pretty standard?

 

[zumanity]

can anyone help please?

 

[zumanity]

anyone got any ideas?

 

[tubes380]

theres two sizes, the regular length crf type, and a longer sdg type, and both take different length stems,

sdg stem is 230mm
crf stem ???

 

[Cactus Jack]

I checked the head stocks (head tube) on several frames :

DHZ twin pipe , DHZ Monster twin trellis , Pimpit KLX type , and SDG twin pipe were all 158 to 160 mm .....

An early DHZ CRF50 copy frame measured .... 138 mm ..... IF you have the short head stock you'll need a shorter steering stem ......

Also .... all the other frames took 44 mm O/D bearings ..... 22 I/D X 44 O/D top and 23.5 I/D x 44 O/D bottom .......

Except the Pimpit KLX type and the CRF50 types which take 41 mm O/D bearings .... 22.5 I/D x 41 O/D top and 23.5 I/D x 44 O/D bottom .....

Most USD forks have long steering stems to suit the 160 mm long head stock tubes .....

Fast Ace fork steering stems (and most likely the Pimpit Marzocchi copies) are machined to suit CRF bearings (but are longer than stock CRF stems) .....

Whereas DHZ USD forks and most other USD forks are machined to suit the 44 mm bearing I/D's ..........