I want to get into another class other than box stock.

What is everyone recommendation for which class is the next best option?
I was think stock. I have several RTR MR-03.

Would I be able to get into stock by upgrading one of these cars? What would be first upgrades I should focus on?

Sad to hear roadrashracing

Based on the rules its pretty open I would say motor first 70T or go BL or you'll be down on power. Next would probably be an aftermarket diff as the extra power might be a little too much for the stock one and an aftermarket one will give you more tuning options. After that its just what you think you need to improve handling. generally most run a disk damper setup and if you want to go all out a double-A arm front end...

Hate to see ya go Roadrash!

Maaku0220, the next step i would suggest would be Stock. At the minimum grab a Dual Disk Damper ( any brand but PN seems to be what most go with), as the damper makes a HUGE difference in how the car handles. A PN70T brushed motor will also be an improvement, and can fit in the stock plastic pods. And if you want the best rear stock setup grab a Aluminum Pod, and a Ball Diff with a pinion set along with the stuff listed above and you'll be set in the rear. For the front if you want to stay with the 03 front end, a set of Low down knuckles will make it easier to get the ride height and get you to 3mm axels for the front wheels, as they run smoother and longer the the 2mm. My favorite 03 front end is hard arm set with PN Teflon ball and kingpin setup (flipped style) with lowdown knuckles. OR if you are NOT going run in the Narrow class you can get a set of 04 arms, suspension set, and springs and go the the 04 Steering on the 03 chassis! You get the better handling of the 04 and not have a good chassis just sitting! I have a post in the mini z thread on the parts listed needed to do the swap.
The post of the Skyline chassis I have a few posts ago was my BoxStock chassis till I built a 04 ReadySet, and it was ok as a BoxStock but RIPS with the pod/damper/70T/Ball Diff setup! Whole different car! It will be a big difference in handling and speed, but you will grow into it. After that a EVO with brushless power is a easy step. Hope this helps!

Thanks for the info. I will have to look for those parts.

Thanks for the details suggestions.

What is everyone's favorite place to get upgrade parts from? I usually order from Kenon Hobby website.

Wolfram, Kenon, and HobbyTown/AMain are my usual go to places in the states. Banzai is a good overseas vendor. shipping is more, but the prices are usually very good and a big order can more than make up for it.

For those using Flipside racing if you want to try using my excel data sheet format you can download the file in the link below. After seeing the NextLevel Timing output I wanted similar data so I made this sheet. Utilizing the sheet will need Microsoft Excel and use of an AI (I use free ChatGPT).
AMA Data Sheet (Zip File)

Below is a youtube video i made showing how to use the sheet. I locked the sheet so you cant manually enter any data or change any of the formulas.
The ChatGPT prompt i use is "extract the data from the attached html into a csv format"
When you paste in the 2 rows of summary data the password is "results"
When you paste in the 75 laps of data the password is "laps"

Class- Box Stock
Date- 02/24/2025
Location- Irvine, CA
Race Time- 4:30.101 / 270.101
Fastest Lap- 3.394
Chassis- Kyosho MR03 Rwd
Body- Lexus SC430 (No Spoiler)
Wheelbase- 98mm
Tires- FR (PN KS1138) / RR (Marka MZRV1R10)
Wheels- PN 16-Spoke 20mm F0 / PN 16-Spoke 20mm R2
Motor- Stock Silver Can
Batteries- PN Racing 900 mAh
Front Springs- Stock
T-Plate- PN #4 Silver CF
Motor Mount- Stock Plastic
Dampener (If applicable)- Stock Center Shock
Dampener Fluid (If applicable)- None
Gearing- 7T Pinion / Stock Differential (44T)
Notes-

CCW Still getting the best of me tried multiple times tonight to beat this time but couldn't get past 30 laps or so without a significant mistake... Guess I have tomorrow to try to put a better time in =p.

Class- Open 2wd
Date- 02/27/2025
Location- Irvine, CA
Race Time- 4:21.865 / 261.865
Fastest Lap- 3.214
Chassis- Atomic MRX (Stock Frontend)
Body- Jomurema GT01 (Lexan Roof)
Wheelbase- 98mm
Tires- FR (PN KS1138) / RR (Gekko RS2 GK-005)
Wheels- Atomic S20 F-2 / Atomic S20 R2
Motor- Rocket 2500kv
Batteries- GaoNeng GNB 350mah LiPo
Front Springs- Atomic MRX Black
Front Shock Fluid- 30K
T-Plate- N/A
Motor Mount- Stock
Dampener (If applicable)- Stock Center Shock Atomic Brown Spring
Dampener Fluid (If applicable)- 30K
Side Shock Spring- Atomic Red
Side Dampener Fluid- 30K
Gearing- 13T Pinion / Stock Differential (53T)
Notes- ESC in "Blinky" zero-timing mode.

A little faster than last month but still left some time out there.

Class-box stock
Date-02-28-2025
Location- Kingsport, Tennessee
Race Time- 294.000 4:54.000.
Fastest Lap- 3.510
Chassis- mr-03
Body- Corvette
Wheelbase- 98mm
Tires- PN Racing super soft front and radial rear
Motor- kyosho stock
Batteries- Ni-MH AAA 1.2v 750mah
Front Springs- orange
T-Plate- PN #3
Motor Mount- mm
Dampener (If applicable)-
Dampener Fluid (If applicable)-
Gearing- 7t / stock diff


Still can't post pictures. BOOOO!!!!!

Class- Narrow Class
Date- 02/22/2025
Location- Camarillo, CA
Race Time- 5:12.263 / 312.263
Fastest Lap- 3.582
Chassis- Kyosho MR03 Rwd
Body- Mazda RX7 Initial D
Wheelbase- 90mm
Tires- FR (PN KS1138) / RR (PN KS 1138)
Wheels- PN 10-Spoke 20mm F0 / PN 10-Spoke 20mm R0
Motor- Stock Silver Can
Batteries- Reedy 800mah
Front Springs- Purple Kyosho
T-Plate- PN Racing Fiberglass #4
Motor Mount- Stock Plastic
Dampener (If applicable)- Stock Center Shock
Dampener Fluid (If applicable)- None
Gearing- 7T Pinion / Stock Differential (44T)

Notes-

1st entry from OLRC track. We hope to make more entries next month. Louis was too lazy to put one in.

Stock

Date-2/5/2025
Location- California
Race Time-241.83
Fastest Lap-3.02
Chassis-PN2.5
Body- Mazda LM
Wheelbase-102mm
Tires- R Marka 15 +2mm F PN KSM firm slick +0mm
Motor-PN 3500KV

Was sick most of the month and did not have time to drive. This was my only timed run from before I got sick and lost all my momentum. The rest of the time I ran them one after the other with no practice.

MA-020

Date-1/26/2025
Location- California
Race Time-314.83
Fastest Lap-3.48
Chassis-MA*020
Body-911
Wheelbase-90mm
front tires Reflex 40
rear tires Reflex 35
This run was brutal. Traction rolled and had to corner marshal myself four times.