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Engine Upgrades / Big Bore

Q & A for the 450cc, 477cc (and 510cc if you can afford it)
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In Conclusion: What is Possible with 477cc?By sam2019 · 17 Replies · 404 ViewsLast post: 2 weeks ago · Dool
You purchased the 477 - now what?By sam2019 · 11 Replies · 150 ViewsLast post: 1 month ago · sam2019
Great Mods that work with the 477By sam2019 · 32 Replies · 447 ViewsLast post: 1 month ago · Dool
BS6 / Euro5 2021 ECU locked? PT working?By sam2019 · 43 Replies · 603 ViewsLast post: 3 days ago · Dool
TrottleBody of 2022 tripper model videoBy sam20191 Reply · 34 ViewsLast post: 6 days ago · Dool
477 plus stage 2 cam plus big valve headBy sam2019 · 18 Replies · 229 ViewsLast post: 1 week ago · Dool
477cc StickerBy sam2019 · 23 Replies · 295 ViewsLast post: 2 weeks ago · Dool
Great "Guess The Max" SweapstakeBy sam2019 · 16 Replies · 161 ViewsLast post: 2 weeks ago · kabuku6
Sound bitesBy sam2019 · 47 Replies · 529 ViewsLast post: 2 weeks ago · Dool
Head workBy sam2019 · 82 Replies · 1,244 ViewsLast post: 3 weeks ago · Dool
Dyno ResultsBy sam2019 · 119 Replies · 1,990 ViewsLast post: 3 weeks ago · Dool
OH MY F*CKING GAWD - THE TORQUE IS SOOO AMAZING....By sam2019 · 21 Replies · 265 ViewsLast post: 1 month ago · Dool
Powertronic cheaper (in the west)By sam20199 Replies · 162 ViewsLast post: 1 month ago · sam2019
How to bore the Big BoreBy sam20190 Replies · 45 ViewsLast post: 1 month ago · sam2019
Questions from USABy Paul7 · 16 Replies · 249 ViewsLast post: 1 month ago · patrick
477 after 5000km - disassembled and checkedBy sam20193 Replies · 68 ViewsLast post: 2 months ago · sam2019
500cc Square HimmaBy Dool · 22 Replies · 290 ViewsLast post: 2 months ago · Dool
Over Square 511ccBy Dool3 Replies · 61 ViewsLast post: 2 months ago · sam2019
Idling IssuesBy SoBa · 61 Replies · 774 ViewsLast post: 2 months ago · Dool
2021 BS6 477 no PT?By sam20193 Replies · 82 ViewsLast post: 2 months ago · Dool
Which ECU piggybackBy sam20192 Replies · 68 ViewsLast post: 2 months ago · Dool
Liners or sleeves that replace the 477 linerBy sam20192 Replies · 67 ViewsLast post: 2 months ago · sam2019
Big Bore Kit Tolerances...By RCruiser · 17 Replies · 197 ViewsLast post: 2 months ago · sam2019