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4 Stroke Performance

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new	The 44mm BBK Thread : Only If You've Installed One Please

KSR Moto

2,941

by meug78
Nov 17, 2020 2:12:30 GMT -5

new	The Quality Crank Thread : Only If You've Installed 1 Please

90GTVert

2,154

by shizly
Sept 7, 2020 5:12:48 GMT -5

new	The Stroker Thread : Only If You've Installed One Please Pages: 1 2 3 4 5 6

90GTVert

4,608

by Kick start
Jun 28, 2020 13:22:00 GMT -5

new	The 50mm+ BBK Thread - Only if you've installed one please Pages: 1 2 3 4 5 6 .. 12

humanshield

176

14,614

by CrankingWithCG
Nov 25, 2020 18:52:24 GMT -5

new	The 47mm BBK Thread : Only If You've Installed One Please Pages: 1 2 3 4 5 6 7

90GTVert

9,617

by GrumpyUnk
Aug 22, 2020 20:41:56 GMT -5

new	Real 20mm Carburetors vs fakes - with pictures Pages: 1 2 3 4 5 6 .. 13

humanshield

187

16,946

by petro
Oct 27, 2020 2:22:00 GMT -5

new	139qmb over range kits

KSR Moto

625

by dexameth
Feb 12, 2021 23:14:52 GMT -5

new	Ring end gap on a 52mm build

larryhobman

113

by CrankingWithCG
Feb 4, 2021 2:27:48 GMT -5

new	How to tune the rollers by feeling rpm of a scooter

jruiz123

130

by Steve B
Jan 25, 2021 9:51:58 GMT -5

new	139qmb need quality kick start

madnesshero

by FrankenMech
Jan 9, 2021 3:42:56 GMT -5

new	BBK help. Pages: 1 2

mikeh

859

by GrumpyUnk
Jan 4, 2021 11:23:43 GMT -5

new	What could be the reason for mph increase Pages: 1 2 3

lovetorepairmybrain

702

by ThaiGyro
Dec 28, 2020 20:05:35 GMT -5

new	2006 Yamaha Vino 50 $ Stroke Carb Settings with Pod Filter

wordmoney11

102

by Zino
Dec 11, 2020 12:37:41 GMT -5

new	Honda metro, best variator weights/sliders for me?

hondamet154

125

by aeroxbud
Dec 6, 2020 13:59:07 GMT -5

new	50cc GY6. Pod filter. Should I upjet?

deejais

197

by wiscootsin
Nov 25, 2020 15:07:55 GMT -5

new	carb adjustment after 50 to 80cc bore upgrade.

flavio

146

by flavio
Nov 19, 2020 23:21:52 GMT -5

new	A9 Cam: Does it contribute to flooding or Durability??

meniscus

142

by SMALL CC TEK
Nov 13, 2020 23:09:25 GMT -5

new	Prefer genuine Keihin Pages: 1 2

taggeorge

487

by taggeorge
Nov 10, 2020 7:43:18 GMT -5

new	2-Inlet Oil Catch Can on Maddog w/NCY Oil Decompression Kit Pages: 1 2

meniscus

630

by meniscus
Nov 5, 2020 11:48:39 GMT -5

new	Stroker crank question.

proy

171

by proy
Nov 1, 2020 15:31:32 GMT -5

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4 Stroke Performance

This is the place for info and help related to 49cc 4 stroke performance modifications.

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Total Posts:	14,970

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Shoutbox

Senna1Rossi: Ah, gotcha! Thanks, Fox. Does everyone see the Shoutbox, or just the people who you choose? Feb 16, 2016 12:39:35 GMT -5

Fox: Anyone who is logged in can see it but it's down at the bottom so most have either chosen to ignore it or haven't discovered it yet. Feb 16, 2016 18:42:39 GMT -5

Deleted: Wow, I just found this. I feel smart now, ha ha. Feb 27, 2016 19:24:24 GMT -5

Silar: Ahh.. New feature for a new riding season! YAY! Mar 16, 2016 17:12:34 GMT -5

Silar: Apparently this still is not being used much. hmm.. Mar 17, 2016 13:55:04 GMT -5

180°off: Anyone want to buy a Yamaha 2t that needs a complete rebuild?

Mar 27, 2016 16:00:19 GMT -5

larryhobman: What is the leanest jet size you would try on a 47mm setup, 60cc stock head with a A9 cam Apr 2, 2016 20:17:30 GMT -5

180°off: Hello anybody Apr 5, 2016 12:16:32 GMT -5

renagade281: Shout, Shout, let it all out!!!! Apr 7, 2016 15:05:49 GMT -5

gsx600racer: These are the things I can do without, Come on I'm talking to you, Come on Apr 9, 2016 0:13:14 GMT -5

180°off: What's up with this shout box? Nobody uses it! Apr 14, 2016 20:29:01 GMT -5

renagade281: DEEEEEEZ NUTZZZZZZZZZ Apr 15, 2016 15:29:55 GMT -5

tsimi: BANZAAAAAAI! Apr 20, 2016 8:57:04 GMT -5

Deleted: ARE WE SUPPOSED TO TYPE LIKE THIS IN THE SHOUT BOX? Apr 20, 2016 18:55:55 GMT -5

tsimi: JUST BECAUSE YOU'RE TRASH DOESN'T MEAN YOU CAN'T DO GREAT THINGS. IT'S CALLED GARBAGE CAN AND NOT GARBAGE CANNOT. May 9, 2016 5:53:53 GMT -5

Senna1Rossi: Where do you guys order Dr. Pulley sliders? I need 21x17 13grams. Is PartsforScooters.com a good place?? May 16, 2016 13:25:41 GMT -5

renagade281: order them from www.MrDeez.com May 21, 2016 11:53:50 GMT -5

Senna1Rossi: Thanks renagade281! May 23, 2016 14:59:12 GMT -5

Fox: I don't really know how to say this but straight. I am Dave's Girlfriend Kellilee and bluntly and VERY SADLY he passed away early Tuesday morning. I know he would want ya all to know this. Thank You Brent for befriending my love he was very happy on here! Jun 18, 2016 16:26:04 GMT -5

Fox: www.gofundme.com/29mgf6b8 I hope it is ok to pass on his gofundme page link. If not you will un-post it I'm sure. Thanks again all!! Jun 18, 2016 16:31:18 GMT -5