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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

2,577

by beentherer
May 8, 2020 14:35:55 GMT -5

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

90GTVert

1,997

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

4,217

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

175

13,496

by petro
Jun 16, 2020 13:46:19 GMT -5

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

90GTVert

9,060

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

184

15,860

by petro
Aug 24, 2020 3:17:54 GMT -5

new	49 cc to 90 cc bbk cranking issues

leslieas1

by GrumpyUnk
Sept 21, 2020 10:54:00 GMT -5

new	A9 cam with a BVH or not????

larryhobman

by larryhobman
Sept 19, 2020 12:52:50 GMT -5

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

meniscus

231

by meniscus
Sept 17, 2020 6:58:28 GMT -5

new	Help with carb re jet

an1theboot

136

by mikehailwood
Sept 7, 2020 16:57:32 GMT -5

new	47mm to 50mm carb issues

golfmech

158

by golfmech
Aug 23, 2020 13:00:43 GMT -5

new	Peugeot Kisbee 2018 fuel injection derestriction Pages: 1 2 3

magfor

1,061

by Steve B
Aug 20, 2020 23:30:58 GMT -5

new	Fix or replace Qmb 139

taotaolivin

177

by taotaolivin
Aug 20, 2020 20:53:40 GMT -5

new	Big Bore kit for 50cc lance cabo 2018

misdemeanor1488

by misdemeanor1488
Aug 19, 2020 17:49:16 GMT -5

new	Best variator for 139qmb

rehabkymco

291

by rehabkymco
Aug 18, 2020 4:59:14 GMT -5

new	50cc qmb139 remove restrictions

enrita

128

by enrita
Aug 16, 2020 17:45:40 GMT -5

new	Question about gy6 engine

darius823

114

by bullybike
Aug 14, 2020 21:00:16 GMT -5

new	20mm carb upgrade.

locxdog

by GrumpyUnk
Aug 14, 2020 10:37:38 GMT -5

new	Big bore kits on Amazon for $25/$30. Are they garbage? Pages: 1 2

deejais

496

by bullybike
Aug 6, 2020 21:13:17 GMT -5

new	Vacuum fuel pump vs Gravity feed

bullybike

177

by cypher1982
Aug 4, 2020 21:20:28 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:	14,819

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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