Author Topic: Master cylinder fit on low bars  (Read 48 times)

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Offline Mostly-broke

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Master cylinder fit on low bars
« on: April 11, 2026, 11:04:37 AM »

Hi, having just bought my cb750, I've attempted to put European handle bars on my. It's a US import to the UK and I've encountered an issue. The master cylinder assembly fouls the tachometer and there is no way this is going to fit. I've double checked my purchase, and they were listed as CB750 European bars.
I've gone through the hassle of pulling all the wires through the bars, stripping the wiring in the headlight bucket and reassembling only to find in the final stages the bloody MC wont fit!
I'm pretty sure it's one of those repops but I have the original MC and that's the same dimensions.
What am I missing?
Is the top clamp different on European models? I feel like if it was an inch higher it would fit ok.


Offline bryanj

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Re: Master cylinder fit on low bars
« Reply #1 on: April 11, 2026, 11:30:33 AM »
Were the bars listed as uk spec 750 or just generic uk?
Yolks are same
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline ThatUnknownGuy

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Re: Master cylinder fit on low bars
« Reply #2 on: April 11, 2026, 02:04:57 PM »
Whats the difference between european handlebars and stock US?

Offline bryanj

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Re: Master cylinder fit on low bars
« Reply #3 on: April 11, 2026, 03:24:24 PM »
US are much higher
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline newday777

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Re: Master cylinder fit on low bars
« Reply #4 on: April 11, 2026, 03:34:08 PM »
Whats the difference between european handlebars and stock US?
US bars are 5" height and sets you more upright.
Euro bars are 2" height give a slight lean forward.

Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 1 K2, 4 K6, 1 K8, 1 F1, 1 F3
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline newday777

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Re: Master cylinder fit on low bars
« Reply #5 on: April 11, 2026, 03:36:49 PM »

Hi, having just bought my cb750, I've attempted to put European handle bars on my. It's a US import to the UK and I've encountered an issue. The master cylinder assembly fouls the tachometer and there is no way this is going to fit. I've double checked my purchase, and they were listed as CB750 European bars.
I've gone through the hassle of pulling all the wires through the bars, stripping the wiring in the headlight bucket and reassembling only to find in the final stages the bloody MC wont fit!
I'm pretty sure it's one of those repops but I have the original MC and that's the same dimensions.
What am I missing?
Is the top clamp different on European models? I feel like if it was an inch higher it would fit ok.
When you mount the master cylinder you will need to reroute the hose. It doesn't foul the tachometer when adjusted properly. My blue K5 I put the Euro bars on, my red K6 has the stock US bars on it, for now.
Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 1 K2, 4 K6, 1 K8, 1 F1, 1 F3
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A