performance

Since our Stage 1 kits are so popular for the GX200 and Predator 212, We now offer them for the big block GX390 and Pred420cc as well!!! https://www.OldMiniBikes.com/honda-gx390-pred420-mini-bike-kit-stage-1.html...

Hellllloooooo OldMiniBikes Community!! My name is Justin, I'm new to the site and I'm 16 years old. I live in Highlands Ranch, Colorado, where this thing is VERY not legal :laugh: I paid $160 for the doodlebug originally from craigslist, with the stock 97cc and no brakes :thumbsup: I thought maybe...

I've been checking out connecting rods for my engine and I came across thishttp://www.OldMiniBikes.com/?target=product&product_id=32297 it says its a performance cast rod from arc. Has anyone used thisk? are they worth anything? How many rpms will it hold up too? They are a whole lot easier on...

Autolite ar3910x OR NGK bp6es

To get the best performance. What r the best combination of after market parts for a predator 212 brand new engine, or is the stage four kit good enough?

I'm new to small engines and have been rebuilding a go kart from ground up and put a predator 212 hemi in it and bought the stage one upgrade kit, I want to put the performance air filter kit on it but don't know how to route the house coming out of the top of the fuel tank since it attached to...

Curious if there are any performance parts that I can buy for this engine? Thanks in advance. Brand new.

I have a flathead 5hp briggs thats beefed up pretty good but its not good enough for me. Where can i get a high performance racing kit for it that will make it go faster and run like a champ with out breaking the bank?

Question, At the end of this brand is say's, Not Riveted Closed. :huh::confused1: Are my nickel plated brand riveted together... & why aren't these?

After reading through the "performance jackshaft" sticky - I decided to give one a go. The craftsmanship and ease of install looks awesome on the PMR unit - but that takes all of the fun of fabrication out of it... I decided to pick up an Azusa jackshaft kit and make up some plates to...

I need an expansion chamber pipe for my Rockwell 340. I'll post a pic of the header pipe but I imagine any vintage 2t performance pipe will work. Located in Greensboro nc Thanks

Why are there 3 holes on the governor lever? Mine came stock with the spring in the middle hole.(predator 212cc) Would putting the spring in a different hole change anything noticeably? Which hole would allow more performance? I tried searching on Google and couldn't find anything. Just curious.

I like the styling of the Baja Doodlebug but it seems to me that the performance from the Motovox MBX10 is better, is this true? I know nothing really of engine specs. :)

Where can I find a performance camshaft for a briggs 305? Thanks

I have an H70 that I'd like to "hop" up a little and gain a few more hp from and make reliable as well. I'm not looking for some insane engine that is squeezed to the gills and needs a rebuild every other run. I'm looking for some solid (mildish) performance upgrades. I'm using an H70 circa...

I put a new hemi 420cc predator item #60349 on my go kart a few months ago and now I'm looking to make some modifications to increase performance. Does anyone know if performance cams for a gx390 or the older predator 420cc will fit the new hemi 420?

K guys after some working and building my clutches to work properly I was sitting around thinking about performance upgrades that could be cheaply done. as of right now I have Rlv header .035" main jet K&N air filter Soon to have 1.3:3 rocker arms gx140 E-Tube My predator is the hemi model...

Cleaning house for some winter builds. Here is a clean 5hp I/C long block. 3/4" tapped and keyed PTO shaft.Compression feels nice and it really doesn't look like it had much time on it. I've never run it though. Dipstick tube is cracked. What's included: New ARC 3.87" super stock billet rod Used...

I know the Predator 6.5 HP (212cc) is a very good engine and has lots of aftermarket products for it, but I was wondering about the other Predator motors. There is the 8 HP (301cc) and the 12 HP (420cc) and I was wondering if they are any good with performance and upgrades with aftermarket...

Black mamba cam fits new predator and gx200 50$ Billet rod +10 with flattop piston 100$ 22mm mikuni carb kit 110$ jetted perfect 1.1 ratio reinforced rockers 20$ 14cc head milled 0.65 75$ Pushrods 0.65 shorter 30$ Also have stock parts Rod Cam Crank Carb Piston Pick up only...