What would you prefer? More horsepower or less horsepower but more user friendly?

Brilliant technical skills.  Just shows that spending money on trick parts can be wasteful.  The dyno never lies.  Looking forward to the next one 👌

Yup as expected. Your either all in or all out...on gytr pages it recommends the cams, stacks and thinner head gasket all work together then the bigger primary headers come into their own. If you dont need it dont spend it. Off the shelf system and quality tune is all 99% of folk will ever need.

The Akra evo system works really well with less radical cylinder head and cam changes. I wasn't keen on the special head making peak power at the rev limiter, it means you're losing power lower down. Loved your totally unbiased video 👍🏻

thanks for the video as always, always learning something

Interesting video as always 👍🏻👍🏻👍🏻🇬🇧

Very interesting thanks brilliant video 👍👍👍👍

Supetstock exhaust all day. Mated with mwr stacks and race filter

Hi, V&H used to make sport bike pipes a long time ago....Then Sport Rider mag. did a test.... (like 10 pipes same day same bike kind of thing) The V&H pipe MADE LESS POWER THAN STOCK!!!!!!!    I believe that is why they went to the Harley stuff...... I really enjoy your videos, Thanks

:hand-pink-waving:❤👍

Awesome content and knowledge. As a former cnc machinist it amazes me the investment needed to port these heads only to make them worse.

212 on johns dyno is still strong figures

Not sure if tim radley is still doing bike heads, he used to be very good at designing and porting.

Awesome video, love your detailed work! I have a 2024 R1(Raven Edition) that i bought brand new, still completely stock. I am buying a ton of stuff this winter for it, a DNA airfilter & SC Project GP-70R being the main power add ons with a dyno tune from Xplane(i live in the USA). Anywho...have you dyno'd this exhaust system and if so results? Keeping the stock headers for now.

Strange as YART are the go to R1 guys. Current WEC champs too🤔

Hi great subject ,dont fall into what is pleasing to you eye fool you into a fauls sense of security ,the engine has no feelings for your wants and woes ,the thing is if your intake length egt and cam events dont match the math in the exhaust requirements it wont ,air flow is king and losses are relevant ,there are many ways to achieve your goals but HP is only a calculation ,ride ability is key ,just an observation but nice content and thinking

If you can be bothered chucking the bike on charge between sessions/races, the BDK race generator seemed to have improved my bike somewhat. I can usually do around 20laps before needing any recharge but that will vary from circuit to circuit obviously

Wonder if the k&n air filter is a restriction,  mwr bsb filter might be worth a go, or Dna

Is it your dyno you use ?