BMW Full Custom Build - R90/6 Airhead Rebuilt from the Crankshaft UP!

Grab a snack 'cause this is a long one! This 1975 BMW R90/6 was an ideal candidate for a complete custom transformation. It was a solid runner and in good shape overall, though it was far from a perfect specimen. With over 53,000 miles, the engine was in sore need of a rebuild and had received some suspect work in the past. Additionally, the paint job looked good from afar but was far from good, with plenty of chips, small dents and some wobbly pinstripes. Some overspray had made its way onto the engine and frame as well. This video shows the enormous effort that went into turning this staid old-man BMW into a hopped-up custom done in the popular euro-bobber style.
If you'd like to see more about the work that went into this bike, there's twenty additional videos breaking down each phase of the build, where I explain the what and why of each modification and restoration process.
R90 Playlist: • BMW R90/6 Custom build
Custom touches:
⦁ Complete crankshaft up engine rebuild featuring a Seibenrock 1000cc power kit
⦁ Rebuilt heads with dual-plug conversion and larger exhaust valves
⦁ Brand new clutch kit
⦁ Lossa Engineering stainless steel cone mufflers
⦁ Refreshed front forks, cut down 100mm with new progressive-wound springs
⦁ New 420mm rear shocks hung from custom fabricated shock mounts
⦁ Refreshed final drive and new driveshaft U-joint
⦁ Custom fabricated subframe and solo seat
⦁ Single-wire dual LED taillights
⦁ Cognito Moto LED headlight modified to accept OEM BMW key switch
⦁ Motogadget Bar-end turn signals and Mirror
⦁ Motogadget M-unit Blue control unit
⦁ Motogadget Chronoclassic Tachometer/Speedometer combo on custom mount
⦁ TheMotoworks 3-button handlebar switches (designed and manufactured by me!) shop.themotoworks.com/collect...
⦁ Renthal 1 1/8" Fatbar handlebars with custom CNC machined clamps
⦁ Brembo brake master cylinder and clutch lever with custom stainless brake lines
⦁ Domino single-pull cable and custom 1-into-2 throttle splitter
⦁ Dyna 3 electronic ignition and Dyna dual-output ignition coils with custom plug wires
⦁ Complete scratch-built wiring harness
⦁ Cognito Moto tachometer drive block-off plug
⦁ Heidenau K60 Scout tires
⦁ A fine, fresh coating of black paint, powdercoat and grey cerakote
⦁ Much, much more!
I'm on Instagram @roodlum / roodlum

[@jaedong87]

I would totally watch the 2 hours extended version, no background music, only tools clanking, ASMR version of this! 🔥🔥🔥

[@rogerramah1754]

exactly, the music is ass I had to watch the whole thing on mute

[@viktordanisovic9520]

@@rogerramah1754 ll,l,o 9 o 9

[@viktordanisovic9520]

oò

[@viktordanisovic9520]

@@rogerramah1754 oll,,o, 99o9 lo

[@viktordanisovic9520]

l

[@cspark9186]

This guy is incredibly talented and must have vast experience working on BMW racing machines. Whether you like Cafe racers or not, you have to appreciate this level of skill.

[@paulmorris4773]

Totally agree

[@tibosalgosse940]

Kikou

[@notjoeyg666]

I like them alot they look sweet

[@sebastianbunea5174]

Generally scared to death by motorcycles, but this BMW and generally the Cafe Racer style makes me wanna get one in the near future. I've subscribed, cannot wait for more videos like this.

[@petebike]

Every time a vintage R bike gets crapped into a cafe bike, the world becomes a little less awesome.

[@mberrey45]

Agreed. Turning it into a Cafe racer ruins the history and character of the machine. Unfortunate.

[@TomSarros-bj2mq]

I agree was a beautiful bike now a junker!!!

[@lpalokan]

A good reason to have two of them!

[@Paradigm1976]

Great work. I love learning from folks who know what they're doing, hands down.

[@chrisstclair3954]

That's a piece of art.You did an amazing work . What a beauty.

[@schlappimichael8351]

Amazing. What a craftsman! I wish I had such marvellous skills! Thanks a lot for sharing.

[@DrewKendall11]

The subtle M division stitching on the seat 🤌🏼

[@konstantinosampatzidis9856]

CONGRATS ! THE BEST MECHANICAL BUILDER EVER ! I LIKE TO SEE YOU WORKING AND BUILDING THE BIKE !

[@fryhy7724]

I'm taking off my hat. Absolute beauty and great professional work!

[@alexwotherspoon5630]

What an amazing build 👍 Fantastic work

[@croracer1987]

Thanks for this awesome video, i was spellbound. Amazing work dude, big big respect. Crazy looking bike

[@meliquidlightning]

you did such a great work with that motor, holly molly, honestly, such a talent!!

[@rustynuts82]

The hours and skill required for this level of rebuild is immense. Nicely presented too.

[@Spodokamono]

Hi Rusty Nuts, I just checked your channel and was looking at your videos. I saw you have a review of the multistrada 620 and 1000. I will be watching this later. I had a 620 and absolutely loved it. Not a very good looking bike. I toured for nearly 2000 miles from the UK to Mulhouse and Geneva and all around the area. The bike never missed a beat. It was so comfortable, I loved it. New subscriber and catching up with your videos later 👍

[@rustynuts82]

@@Spodokamono my sons bike, he likes it too. The looks divide, but it was the first performance adventure in 1000 spec.

[@markocernic8659]

You are the MAN !!! Insane work. Wonderful bike. I wish . . . .

[@barextoyogon9422]

the music gives a "how did they do it?" vibe love it. great build!

[@elfenomeno9244]

how many fields of knowledge you have to have to build something like this. hats off man.

[@IASONASful]

Excellent work!!! Congrats!!!

[@torokun]

Beautiful work

[@agussugiarto3488]

Genius man rebuild bike.....wonderful.

[@GeorgiyMorozov77]

Замечательный, отлично реализованный проект. Ребят, вы - молодцы!

[@RubiconDONN]

This was mad wizard skills and knowledge on the build. Much respect

[@brunoalmeida1238]

Perfect work.

[@onemaxlight]

the cure on detail and the job you have done give me shivers.. Compliments from italy

[@zacharias_b]

damn the algorithm, this is a top notch video! Great music selection too

[@philtobin9510]

I'm in the process of a full transformation project at the moment, I couldn't afford an R90 though and as it's my first project of this type I've gone for a Dnepr 650, remodelling to get as close to the Rennsport RS54 only with 19" wheels. You videos have been a huge inspiration, Thank you.

[@antonoat]

Fantastic job indeed! 👍👏😀

[@kryptotrader4699]

What a bike! nice job bro!

[@godsangryhands4499]

I enjoyed this! Great Job!

[@danielriv4532]

FRIEND...CAI I SEEN THAT YOU KNOWS A LOT OF MOTORS AND BIKES. BYES SINCE ARGENTINA. CONGRATULATIONS.😊❤

[@black-on3187]

it's amazing!!! thx for good job, man!

[@ericsondmd]

That was stuff of legends. Subscribed!

[@gav825able]

Amazing awesome work 👏

[@highendtrends3508]

Extremely awesome video!

[@Hunterhere2959]

Awesome work bro

[@fortismonsadv]

So glad I found this - well done! Subscribed.

[@user-lp9fj1sd7f]

Новая жизнь старой техники! Здорово!

[@johnwest7233]

Mate, your a pleasure to watch 👍🏼

[@questioneverything1123]

What beautiful lines as finished!!! That is / would be my dream bike, to go out and rip on the pavement for brief periods. I love that era of BMWs, I marveled my mothers' boyfriends late 70s, R90 completely factory tricked out. I used to just stop and stare at it... like a fine sculpture. In hindsight they "look so dated" to me. Then BAM, your EPIC CREATION, nip tuck, super clean chassis, everything caressing the frame closely while cruising, the country roads would be such a blast. KUDOS MAN!!! I do not ride motorcycles at this point in life. Neck and shoulder issues, make riding (even an upright cruiser) bicycle challenging for me. Living isolated, on gravel roads, in dense country, there are too many deer that influence driving on 4 wheels.

[@monty00701]

Great job brother!!

[@filipshulikov143]

I am absolutely envious of people with your talent. One day! Amazing work bro

[@Hawk7886]

Keep working and practicing, dude! Talent is found through repetition.

[@LoganFan]

Excellent job!

[@jeffreylindop5782]

great talent, and great work.

[@Oldiebiker]

Great video, thank you 👍

[@mooman351]

Awesome, got an r100 I have lost motivation on consider it regained!

[@CaseyAcaster]

woah...right when I thought I might keep my R80 rebuild stock I find this. Very inspiring and excellent work on this build and video. Stoked to see what other machines you've built 👏

[@roodlum]

Thank you! Take that bike and make something cool!

[@elcin1229]

Very nice performance

[@fidelqueimporta..6786]

impresionante !! te quedo estupenda !✌

[@nikolajskrabelj4503]

Young boy , very good work.

[@eskanderx1027]

Pure art.

[@TechnMoto]

Dam dude. Job well done!

[@MotoMango]

Nice work bro!

[@notiskoundouris9320]

Τοp quality work.Well done!

[@roodlum]

thanks!

[@gonzalopacheco7684]

INCREÍBLE 👏👏👏

[@PauloMartins-pt3bh]

Estou daqui do Brasil acompanhando seu trabalho! Parabéns , sucesso!

[@franciscoromero9180]

Artista que eres un artista, muy muy buen trabajo, saludos desde el sur de España

[@istvantorok26]

awesome build ! love your vids and your work !

[@mohamadzaidi6378]

great job

[@AlphaMachina]

Sub-freaking-scribed! Beautiful, man. You're a damn wizard. Such a clean bike to start with, too. Someone took care of it.

[@Llamadosalvaje]

Cool! Congrats from Chile!

[@dozer877]

Amazing content!

[@claudechamouni97]

You are the boss, fantastic job, bravo 👍

[@roodlum]

Thank you! Cheers!

[@ferroasgaya7889]

Amazing job mate, absolutely crazy details 🤌🏽👌🏽 new subscriber. New subscriber from Spain, un saludo.

[@Ammon6]

Wow great stuff man

[@oscarmoreno5377]

Eres un genio. Te felicito

[@robertcondra1920]

Very talented guy

[@ShinmenTakezoVgbnd]

Wow! Nice build!!!

[@roodlum]

Thanks!

[@Spodokamono]

Super video, super impressive build. I like it a lot. I will be watching the other individual vids you made as well. I have an R65LS from 81 which is in great original condition. Watching videos like yours make it harder to keep it original. Thanks for sharing your content and subscribed ready for more content. 👍👏👍👏

[@roodlum]

Thanks man welcome to the team!

[@Thewatson77]

Very nice work and such a pleasurable video to watch. Thank you for the video. You’ve got a new subscriber here.

[@roodlum]

Thanks and welcome aboard!

[@agussugiarto3488]

Nice build...

[@ughidontcareok]

Beautiful bike dude!

[@roodlum]

Thanks!

[@DrewKendall11]

Your shop is sick

[@geebee1689]

Awesome vid, came across you whilst watching cafe racer garage, subscribed instantly.

[@MonoStev]

I love this kind of videos, your work its great so here you have a new subscriber. I hope you get beter numbers, your work deserve it

[@roodlum]

Thank you so much!

[@Maciste982]

Fantastic!!! Monster!!!!

[@TheGorillafoot]

It's sweet man. Love the horizontally opposed piston motor.

[@motosviejas6380]

Killer BMW clasic

[@portosportos1507]

Very Good Job 👍✌

[@bossroster3807]

Superb💓

[@davilozada]

I’m from Brazil, great job man, i’ts a perfect bike.

[@selcukyilmaz4884]

you are genius ! 👏👏👏

[@roodlum]

Thank you! Cheers!

[@mohinhcute8006]

great, I like your work

[@Bimmercasta]

Perfect 👍

[@robertesek2930]

Awesome work and great video! You have a new subscriber my friend!

[@williagustin3973]

amazing

[@gregd.88]

Love this bike. I would put some mud guards front and back but cool bike man.

[@martinberger9975]

Wow....and you did it all by yourself, no help? SUPER!

[@ADDvanced]

This is awesome. Dude we are now friends.

[@mrtpunkt778]

really nice!

[@benjaminday5238]

Such an awesome video

[@roodlum]

thanks!

[@weekendenduro1111]

nice job!!!

[@Mapandacompass]

Love the Harbor Freight lift. Not greatest but the very best for restorations. Bravo Zulu

[@roodlum]

Thanks! I agree, my lift has done me well over the years. Perhaps they're not great for massive bikes, but the largest things I ever put on it are airheads or my ironhead so I've not had any trouble. Cheers!

[@anujhe]

good work nice music love from india ❤

[@saintjackass6445]

I never skipped this video! Good job!salute! I just subscribed btw👍🏻.. u deserved it!

[@scottgibbs5903]

Respect

[@imsgoalie1]

That motor looked pretty clean coming apart, tbh. Somebody gave a damn about that bike. I ride an old ass 1100 Shadow that I'm doing a little this and that to in order to make it less Chrome Boat-y. The motogadget led lighting, grips and mirrors looked familiar. But now that I saw what a cool thing you did with the ignition switch...I'm tempted to bust out the step drill and take apart my little cheesy chromed stock one... That was a slick touch!

[@chil5150]

Awesome!!!

[@paulmorris4773]

Awesome video, just aquired a 1980 r100. Farthers old bike stood for 23 years. I was thinking of what to do with it, I now know what I am going to try and do with it. I think I am watching all the other vids, great work.

[@benitopussolini544]

Yes, totally butcher your dad's old bike that probably meant a lot to him.he,d probably be heartbroken.dont do it!

[@Lux-Exterior]

Please consider just getting it up and running properly. Then ride it! Bit by bit do Minor performance mods like upgrading suspension, brakes, fork brace and maybe exhaust. Then ride it some more! Too many of these airheads are getting hacked up. They’re great bikes as is. I regret selling my r90/6 almost everyday

[@paulmorris4773]

@@benitopussolini544 I hear you but, the bike need to be ridden and this is the only way its going to see the light of day with me on it. I think he would be more heartbroken with what I am doing to the ZZR1100, thats another story.

[@MsBossio]

Fantástic !!

[@cryborg73]

fantastic!!!!!!!!!!!!!