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 
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My 1300ccm Big-Bore RnineT Pure Café Racer
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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.
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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
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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
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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
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went for the urban GS seat and backpiece with the rizoma cover and tiny lights, was happy with the result....for a while 😁
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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
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old vs. new piston, you can see a noteable difference
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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
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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
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i am finished with this bike (for now 😂)
all the mods done to the bike:
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. 🤟
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. 🤟
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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.
www.motogadget.com
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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
it's in the original post, the final numbers are 132.3 HP and 140.4 Nm
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 😂
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
here
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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
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
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so i noticed that the original brake line was scrubbing to much because of the clip ons so i replaced them with a custom line as the original one was just too long.
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had a small heart attack when starting the engine for the first time in weeks, it was smoking like crazy from the exhaust but that seems to be normal for the boxer when it sits on the sidestand for a longer time. snagged myself the oil pressure gauge from xray on black friday and installed that aswell.
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and now shes up and running again, sadly have to wait for march for a ride to see if everything works as it should.
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had a small heart attack when starting the engine for the first time in weeks, it was smoking like crazy from the exhaust but that seems to be normal for the boxer when it sits on the sidestand for a longer time. snagged myself the oil pressure gauge from xray on black friday and installed that aswell.
and now shes up and running again, sadly have to wait for march for a ride to see if everything works as it should.
maintenance period is the same and i do services by myself, no chance im giving my bike to some dealer for a half assed service . services do not change. with higher consumption you mean oil? no, the oil consumption went down by a good amount because the forged pistons actually have a good oil scraping ring unlike that thing on the OEM pistons, it is like 0-0.1 liters 1000km. fuel consumption must have gone up a bit but i dont really check that. throttle response is smooth and way better than stpck on the euro 4 models, you get instant response. i have the aftermarket zard headers with a catalytic converter, i sadly cant tell you if the stock headers would be capable for this big bore mod, it will work but it will probably net less performance increase.
. services do not change. with higher consumption you mean oil? no, the oil consumption went down by a good amount because the forged pistons actually have a good oil scraping ring unlike that thing on the OEM pistons, it is like 0-0.1 liters 1000km. fuel consumption must have gone up a bit but i dont really check that. throttle response is smooth and way better than stpck on the euro 4 models, you get instant response. i have the aftermarket zard headers with a catalytic converter, i sadly cant tell you if the stock headers would be capable for this big bore mod, it will work but it will probably net less performance increase.
contact Rehcing for all the Info, i did not order the parts myself, he built the engine for me
www.rehcing.de
fresh set of new tires is always nice but they are slippery as hell, need to break them in with caution.
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www.rehcing.de
fresh set of new tires is always nice but they are slippery as hell, need to break them in with caution.
1 - 16 of 40 Posts
