Author Topic: Keiths 400/4  (Read 565 times)

Offline Coppertop1234

  • SOHC Member
  • Posts: 220
  • As long as the wife is happy
    • View Profile
Re: Keiths 400/4
« Reply #15 on: January 30, 2026, 02:40:59 PM »
Would someone confirm for me the front forks are 33mm ? or have i lost the plot already

On the bike were 31mm presumably off a superdream

I ordered from ebay forks,  top and bottom yolk all supposed to be for 1977 400/4

top yolk came 31mm  - forks from same place 33mm ??

I just sent them back if they cant sell matching kit what's the quality like.

still waiting for bottom yolk hopefully 33mm and what i need if i am correct.

now looking for top yolk and forks again.
I Love Tinkering with Old Classics
1970 Mobylette 50cc  
1972 Honda Cb175
1974 Yamaha Rd250  
1962 Triumph 650 Bonneville
1972 Norton 750  Interceptor  
1978 Honda CB400/4
1976 CB750F1 
1976 Suzuki GT750 Kettle
1978 Honda CB 750 F1 
Married Life No Bikes for a while then
1975 CB Honda 400/4 Restoration
1976 Kawasaki Z650   Restoration
2002 Suzuki GSX1400
1976 Honda cb750F1  Restoration
1978 Honda cb750 F1 Restoration
1977 CB 250 Dream    Restoration
1977 CB400/4  - The last one - Restoration

Offline Bryanj

  • Grogu
  • *
  • Posts: 12065
    • View Profile
Re: Keiths 400/4
« Reply #16 on: January 30, 2026, 03:08:32 PM »
Look at cmsnl parts list , size is usually quoted

Offline Coppertop1234

  • SOHC Member
  • Posts: 220
  • As long as the wife is happy
    • View Profile
Re: Keiths 400/4
« Reply #17 on: January 30, 2026, 04:18:37 PM »
just found complete front end only 1 slight problem

they are in italy - hope they are not left hand drive

delivery in 2 to 4 weeks no rush plenty to do to keep me occupied.
I Love Tinkering with Old Classics
1970 Mobylette 50cc  
1972 Honda Cb175
1974 Yamaha Rd250  
1962 Triumph 650 Bonneville
1972 Norton 750  Interceptor  
1978 Honda CB400/4
1976 CB750F1 
1976 Suzuki GT750 Kettle
1978 Honda CB 750 F1 
Married Life No Bikes for a while then
1975 CB Honda 400/4 Restoration
1976 Kawasaki Z650   Restoration
2002 Suzuki GSX1400
1976 Honda cb750F1  Restoration
1978 Honda cb750 F1 Restoration
1977 CB 250 Dream    Restoration
1977 CB400/4  - The last one - Restoration

Offline taysidedragon

  • SOHC Master
  • Posts: 1745
    • View Profile
Re: Keiths 400/4
« Reply #18 on: January 30, 2026, 11:43:27 PM »
Would someone confirm for me the front forks are 33mm ? or have i lost the plot already

On the bike were 31mm presumably off a superdream

I ordered from ebay forks,  top and bottom yolk all supposed to be for 1977 400/4

top yolk came 31mm  - forks from same place 33mm ??

I just sent them back if they cant sell matching kit what's the quality like.

still waiting for bottom yolk hopefully 33mm and what i need if i am correct.

now looking for top yolk and forks again.

400Four are definitely 33mm.
Gareth

1977 CB400F
1965 T100SS

Offline Coppertop1234

  • SOHC Member
  • Posts: 220
  • As long as the wife is happy
    • View Profile
Re: Keiths 400/4
« Reply #19 on: January 31, 2026, 12:29:43 PM »
cheers for that i thought they were 33 mm,but nice to have it confirmed
 :)
I Love Tinkering with Old Classics
1970 Mobylette 50cc  
1972 Honda Cb175
1974 Yamaha Rd250  
1962 Triumph 650 Bonneville
1972 Norton 750  Interceptor  
1978 Honda CB400/4
1976 CB750F1 
1976 Suzuki GT750 Kettle
1978 Honda CB 750 F1 
Married Life No Bikes for a while then
1975 CB Honda 400/4 Restoration
1976 Kawasaki Z650   Restoration
2002 Suzuki GSX1400
1976 Honda cb750F1  Restoration
1978 Honda cb750 F1 Restoration
1977 CB 250 Dream    Restoration
1977 CB400/4  - The last one - Restoration

Offline Bryanj

  • Grogu
  • *
  • Posts: 12065
    • View Profile
Re: Keiths 400/4
« Reply #20 on: January 31, 2026, 03:50:50 PM »
I think your Superdream confusion is 250 were 31 and single disc whilst 400 was 33 and twin disc

Offline Coppertop1234

  • SOHC Member
  • Posts: 220
  • As long as the wife is happy
    • View Profile
Re: Keiths 400/4
« Reply #21 on: February 01, 2026, 09:21:29 AM »
Thought so

just having a debate with a no return on ebay who sent me a 31mm yolk, he said it is of a 400/4 and wants me to explain why they dont fit.

I sent him info on people used the superdream forks on 400's as a replacement and obviously the one he is stripping had had this  conversion to 31mm which are not correct spec for bike which i required.

Waiting for further response on return,but buyer protection should cover it as the are not as described.
I Love Tinkering with Old Classics
1970 Mobylette 50cc  
1972 Honda Cb175
1974 Yamaha Rd250  
1962 Triumph 650 Bonneville
1972 Norton 750  Interceptor  
1978 Honda CB400/4
1976 CB750F1 
1976 Suzuki GT750 Kettle
1978 Honda CB 750 F1 
Married Life No Bikes for a while then
1975 CB Honda 400/4 Restoration
1976 Kawasaki Z650   Restoration
2002 Suzuki GSX1400
1976 Honda cb750F1  Restoration
1978 Honda cb750 F1 Restoration
1977 CB 250 Dream    Restoration
1977 CB400/4  - The last one - Restoration