[Kowalski]

Hello folks and greetings from Germany,

i would like to show you my 1300ccm Big Bore Pure Café Racer from 2017. It's gonna be a longer post, sorry!

It started like this about a year ago when i sold my 1250GS as it bored me to death and bought this used Pure that had some minor mods installed like a short rear and a relocated numberplate.

at first i did some basic changes like unit garage exhaust but sold that one pretty quickly as it was just too obnoxiuosly loud and the sound wasnt good either + im pretty sure that it loses ponys, went for the aftermarket akra and also installed clip ons

then i figured that i want to go all in on this bike as i LOVE it, that meant stopping with the basic mods and stripping the whole thing

powdercoating all the silver parts and getting the all aluminium tank from the Euro 3 Models, i just like it more than the euro 4 ones as they dont have the shiny coating. also upgraded the suspension to öhlins in the front and Bielstein in the back

went for the urban GS seat and backpiece with the rizoma cover and tiny lights, was happy with the result....for a while 😁

the aftermarket akra still didnt do it for me as it did not have that great deep rumbling sound from the stock can and when i called my tuner he said that for performance the double oem akra pipe would be very good so i installed it together with the zard headers and got a big bore kit installed

old vs. new piston, you can see a noteable difference

the stock dyno run resulted in 113HP and 113Nm
after the big bore kit and custom mapping we are looking at 132.3HP and 140.4Nm

sadly the dips in the middle cant be flattened easily because of the airbox and that would require some mods that will make me lose performance on other parts of the curve and i need to keep it somewhat street legal but i am still very happy with the results!

and this is how she looks today

i am finished with this bike (for now 😂)

all the mods done to the bike:

• Big Bore Kit 1300ccm
• Zard SS Headers
• Small front fender
• Öhlins fork cartridges
• probrake Clip Ons
• lowerded the tachometers by 7cm
• underbar mirrors
• brake/clutch levers from Wunderkind
• silver parts powder coated in black
• Wilbers steering damper
• LSL footrests
• urban gs seat and back
• kellermann tiny indicators/lights front and back
• Bilstein shock/damper in back
• HeinzBikes number plate holder
• K&N air filter
• OEM double akra can
• unit garage intake cover
• side stand from the scrambler

over the winter im planning to tweak the cylinder heads for a better airflow which will probably result in a few more ponies and a bit more torque, amazingly enough this is not even the end of the 1200ccm air cooled boxer, replacing the crank and camshaft will get you up to 1400ccm and over 150Hp / 150Nm but that is too expensive for the gains.

if you have some question i try to answer them. 🤟

 

[BaldyDave]

Wow what a great build! Where did you get the big bore kit?

 

[Kowalski]

We have a BMW Boxer tuning specialist (i guess there are a few but he is the most known) here in germany (rehcing) that installed the kit for me, it consists of 105mm Pistal forged pistons and bigger cylinders (ofc )

 

[BlitzSchnell]

Wow … that wasn’t cheap … what a nice machine you had built … I’ll bet that’s sweet when you twist your wrist … any 1/4 mile times or top speeds. What did you final Dyno look like, HP? etc…. Sure looks nice.
StayUpOn2 ….. …… …… I’m sooooo jealous .. but with a big smile. Nice work / done right too… please tell me more about those great “under-bar mirrors” maybe some close up of them, mounts etc……I really like that look and how practical they are too. Those would go over big with lane splitters ………..….Blitz

 

[itsryanlee]

Badass build!—except for that soul fuel decal 😆

 

[Granitedigger]

Just wow!
I'm curious what gains you would lose w/air box removal?
Also curious your impression of the new Conti's vs the OE Metzler's?
And I'm with Blitz on this, tell us more about those mirrors.

 

[Kowalski]

the mirrors are from motogadget called mo.view sport, they have different shapes available. they are super high quality and have no glass, they polish the aluminium to make it as shiny as a mirror.

mo.view MetalMirror, a glassless rear view mirror for motorcycles

mo.view, Motorradspiegel, Metalmirror, glasloser Rückspiegel, glassless Mirror, Lenkerendenspiegel, Rückspiegel, Rear View Mirror, CNC-Spiegel, Moto Spiegel, Designspiegel, Lenkerspiegel, Ultracut,

www.motogadget.com

What did you final Dyno look like, HP? etc…. Sure looks nice.

it's in the original post, the final numbers are 132.3 HP and 140.4 Nm

Badass build!—except for that soul fuel decal 😆

it's a tribute for the rninet customizer book but i will probably get tired of it sooner than later and rip it off for cleanliness reasons 😂

Also curious your impression of the new Conti's vs the OE Metzler's?

i did not ride the metzelers for long but the contis RA4 are very good tyres, they can basically do it all dry, wet, heat up fast, good mileage etc. but i basically never ride in the rain thats why i will go for sport tyres next

 

[BlitzSchnell]

Thanks for the link on the sport mirrors @Kowalski … I’m actually more curious about the way you mounted them, the hardware you used and how it is to use them … field of view etc. I went to bar end mirrors early on, just couldn’t handle the goofy look of the stock ones. Under the bar looks like a good alternative for me. How about some close up picts showing details of the mounts etc…. Gratitude to you Sir ………Blitz

 

[Kowalski]

here

you can basically use the stock mirror mounts/clamps, just turn them 180° so the thread is pointing down, then you screw in the mirrors. note that i only got it to work with the clip ons, with the oem handlebar i couldnt get it to work as the mirrors were always hitting the tank when steering hard left/right, you can reduce the steering angle though with some steering limiters (idk if that is the right translation ) then it works with the oem bars aswell. on the picture i have custom clamps/mirror mounts but it works with the stock ones aswell. field of view is alright, i need to move my head a bit to the side to see more of whats behind but it works alright-ish. if you use normal handlebars note that you have to tilt your head a lot downwards with the more upright seeting position to see the mirrors, i can look into them comfortably because of the agressive forward seeting position.

im not a fan of bar end mirrors as they dont blend into the line of the bike that well imo at least here in germany because we need pretty big mirrors to be street legal , thats why i used these mirrors. in the US i think you dont have such strict mirror regulations (?) and can mount small ones

edit: seems like you can get it to work with the oem bars aswell if you are patient enough

 

[Euler's Identity]

Wonderful ! I did not know that such kits existed for the 1200.

Did you have to deal with some extra cooling due to the increase in performance ?

 

[BlitzSchnell]

here

you can basically use the stock mirror mounts/clamps, just turn them 180° so the thread is pointing down, then you screw in the mirrors. note that i only got it to work with the clip ons, with the oem handlebar i couldnt get it to work as the mirrors were always hitting the tank when steering hard left/right, you can reduce the steering angle though with some steering limiters (idk if that is the right translation ) then it works with the oem bars aswell. on the picture i have custom clamps/mirror mounts but it works with the stock ones aswell. field of view is alright, i need to move my head a bit to the side to see more of whats behind but it works alright-ish. if you use normal handlebars note that you have to tilt your head a lot downwards with the more upright seeting position to see the mirrors, i can look into them comfortably because of the agressive forward seeting position.

im not a fan of bar end mirrors as they dont blend into the line of the bike that well imo at least here in germany because we need pretty big mirrors to be street legal , thats why i used these mirrors. in the US i think you dont have such strict mirror regulations (?) and can mount small ones

That’s exactly the information I needed @Kowalski, thank you. Banging the tank I’m sure will be an issue for me as well. The bar ends do well I just don’t like the look … I’m actually considering a helmet mount video heads-up display rear view camera. Absolutely perfect at night but not so much at certain angles in sunlight. When the light is good it’s great and when not it’s just completely over exposed and good for nothing …. I’d settle for under bar mirrors and actually like them to be larger than my bar ends are currently. I’ll have to buy a set of mirrors and machine my mounts custom …. Thanks again for the response and feedback … you answered many questions I had not even thought of yet. You saved me much foot work, tests, purchases and frustration too. Gratttitude Sir. ………………….Blitz

 

[Kowalski]

Wonderful ! I did not know that such kits existed for the 1200.

Did you have to deal with some extra cooling due to the increase in performance ?

the stock oil cooler is sufficient, in slow city traffic it can get into the high 120s (celsius) but at normal riding its not an issue. i recommend not using any oil cooler covers as they do lower the cooling efficiency a little.

 

[itsryanlee]

That’s exactly the information I needed @Kowalski, thank you. Banging the tank I’m sure will be an issue for me as well. The bar ends do well I just don’t like the look … I’m actually considering a helmet mount video heads-up display rear view camera. Absolutely perfect at night but not so much at certain angles in sunlight. When the light is good it’s great and when not it’s just completely over exposed and good for nothing …. I’d settle for under bar mirrors and actually like them to be larger than my bar ends are currently. I’ll have to buy a set of mirrors and machine my mounts custom …. Thanks again for the response and feedback … you answered many questions I had not even thought of yet. You saved me much foot work, tests, purchases and frustration too. Gratttitude Sir. ………………….Blitz

I have the underbar Motogadget kit from Classic Raisch and it took some time and many adjustments to get the angles right, but I do not hit my tank on full lock.

With just a slight tilt of the head while riding, I have great vision. Here's a photo when I was first installing them (Club version vs. the OP's Sport version mirrors)

 

[BlitzSchnell]

Beautiful …. Thank you @itsryanlee, I have similar bars and I really like the tucked in look they give. I’ll order a set today. This forum is so damn cool for stuff like this …. I won’t have to reject or return anything thanks to my fellow riders …. We say in Texas “GrassEAss Amigo” …………….another happy member …………..Blitz

 

[itsryanlee]

Beautiful …. Thank you @itsryanlee, I have similar bars and I really like the tucked in look they give. I’ll order a set today. This forum is so damn cool for stuff like this …. I won’t have to reject or return anything thanks to my fellow riders …. We say in Texas “GrassEAss Amigo” …………….another happy member …………..Blitz

This forum is incredibly vital to the community. I've found so many solutions to my problems, which would otherwise have gone unanswered.
As a note, my final adjustments to this underbar mirror kit included moving my handlebar clamps outward...maybe a full 1cm closer to the controls. Other than that, you'll just be using a set of hex keys to adjust the arms themselves
edit: oh also, I managed to strip one of the handlebar clamp torx bolts' head as well...so be careful not to over-torque them and make sure the torx key is fully seated...I've since bought a set of replacement bolts lol.

 

[Kowalski]

I have the underbar Motogadget kit from Classic Raisch and it took some time and many adjustments to get the angles right, but I do not hit my tank on full lock.

With just a slight tilt of the head while riding, I have great vision. Here's a photo when I was first installing them (Club version vs. the OP's Sport version mirrors)

View attachment 156330

good that you got it to work, i lost patience after the 10th adjustment and said 🤬 it 😂 but you also have a different shaped mirror, maybe that helps 🤷‍♂️

 

[BlitzSchnell]

@itsryanlee … I decided to try and work with what I’ve got ….. I realized (or visualized) where the mirror would have to be to serve my viewing behind me and not stick out past the bar ends or strike the tank when lock to lock. Just like yours but with support from the other side. I simply reversed the mount and it looks like it might just work … it just clears the tank, I don’t have to lift my arm to get a direct view and I actually don’t have to even move my head … I can just shift my eyes and get both sides with less effort than when mounted the other way … I haven’t road tested it yet but I think I solved my problem. I’m not crazy about the mirror shape and would prefer something more shapely and stylish but I’ll work with it for a while and see if it passes my requirements . I’ll either relocate the convex spot mirrors …(little round ones)… or remove them completely…….. I like it ! Thanks for the inspiration ……..StayUpOn2………Blitz

 

[itsryanlee]

@itsryanlee … I decided to try and work with what I’ve got ….. I realized (or visualized) where the mirror would have to be to serve my viewing behind me and not stick out past the bar ends or strike the tank when lock to lock. Just like yours but with support from the other side. I simply reversed the mount and it looks like it might just work … it just clears the tank, I don’t have to lift my arm to get a direct view and I actually don’t have to even move my head … I can just shift my eyes and get both sides with less effort than when mounted the other way … I haven’t road tested it yet but I think I solved my problem. I’m not crazy about the mirror shape and would prefer something more shapely and stylish but I’ll work with it for a while and see if it passes my requirements . I’ll either relocate the convex spot mirrors …(little round ones)… or remove them completely…….. I like it ! Thanks for the inspiration ……..StayUpOn2………Blitz

This was one of my choices when I was deciding on mirrors — bar-end mirrors that I could turn inwards just like you have. Get on the road and see if you like the new positioning!

 

[Lelc2]

Wow!!! Incredible and wonderful performance!!!

 

[Kowalski]

some snapshots from one of the last evening rides which i thought were pretty neat although a bit blurry sadly.