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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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You purchased the 477 - now what?By sam2019 · 12 Replies · 222 ViewsLast post: 5 days ago · Roy Gavin
5 days ago
Roy Gavin
In Conclusion: What is Possible with 477cc?By sam2019 · 17 Replies · 497 ViewsLast post: 1 month ago · Dool
Great Mods that work with the 477By sam2019 · 32 Replies · 596 ViewsLast post: 2 months ago · Dool
Head workBy sam2019 · 91 Replies · 1,548 ViewsLast post: 15 hours ago · Dool
Dyno ResultsBy sam2019 · 153 Replies · 2,704 ViewsLast post: 3 days ago · Dool
477 plus stage 2 cam plus big valve headBy sam2019 · 23 Replies · 384 ViewsLast post: 5 days ago · Roy Gavin
5 days ago
Roy Gavin
Piston & Ring Gaps for 477By Reddy9 Replies · 115 ViewsLast post: 1 week ago · sam2019
1 week ago
sam2019
ECU Maps PTBy Dool · 27 Replies · 551 ViewsLast post: 1 week ago · sam2019
1 week ago
sam2019
Compression with our gaskets vs. OEMBy sam20196 Replies · 73 ViewsLast post: 2 weeks ago · sam2019
BS6 / Euro5 2021 ECU locked? PT working?By sam2019 · 43 Replies · 758 ViewsLast post: 4 weeks ago · Dool
TrottleBody of 2022 tripper model videoBy sam20191 Reply · 60 ViewsLast post: 1 month ago · Dool
477cc StickerBy sam2019 · 23 Replies · 358 ViewsLast post: 1 month ago · Dool
Sound bitesBy sam2019 · 47 Replies · 651 ViewsLast post: 1 month ago · Dool
OH MY F*CKING GAWD - THE TORQUE IS SOOO AMAZING....By sam2019 · 21 Replies · 322 ViewsLast post: 2 months ago · Dool
Powertronic cheaper (in the west)By sam20199 Replies · 187 ViewsLast post: 2 months ago · sam2019
How to bore the Big BoreBy sam20190 Replies · 64 ViewsLast post: 2 months ago · sam2019
Questions from USABy Paul7 · 16 Replies · 313 ViewsLast post: 2 months ago · patrick
477 after 5000km - disassembled and checkedBy sam20193 Replies · 88 ViewsLast post: 2 months ago · sam2019
500cc Square HimmaBy Dool · 22 Replies · 353 ViewsLast post: 2 months ago · Dool
Over Square 511ccBy Dool3 Replies · 75 ViewsLast post: 2 months ago · sam2019
Idling IssuesBy SoBa · 61 Replies · 879 ViewsLast post: 3 months ago · Dool
2021 BS6 477 no PT?By sam20193 Replies · 101 ViewsLast post: 3 months ago · Dool
Which ECU piggybackBy sam20192 Replies · 87 ViewsLast post: 3 months ago · Dool