Stock Mud Boss Rules


The intention is to take the Salvas Sportsman Rules for 2015/2017, and adapt them for a fun, entrylevel

RC division with a touring element. It should remain an affordable division to compete as box

stock as possible level, with a few changes to accommodate the series implementation.


If the rules do not say you can, then you can't.

If you THINK you can, you should probably ask.

We will follow the stock Salvas Mudboss rulebook employed at each North East MudBoss Series event

and sanctioned Charter Tracks.

Official's decision is final.

The rules below are simple. Its to be a fun, spec class, allowing for comeptition on fairly equal grounds

for everyone. This class is meant to be about driving ability and adjustability. There shouldn't be secrets

or trickery. Cheating is thoroughly frowned upon. It should be fun, and open to all skill levels and

driving abilities.

1.0 BODY

Salvas MudBoss body only (2014, 2015, 2016 and 2017 version)

1.1 - Any minor modification to the body must be approved before being allowed

1.2 – To be approved, body must have a window opening between the A and B pillars. No vents, full windows only.


2.1 – Stock TRAXXAS 2wd (SLASH or RAPTOR) chassis only - No LCG chassis

2.2 - Original MFG suspension parts only, no other parts allowed (such as from RPM)

2.3 - Original MFG chassis parts only, no aftermarket hop-ups, no optional aluminium parts

2.4 - Front bumper, right side bumper and front body post brace must be removed

2.4.1 - TRAXXAS front optional bumper (TRA2735) can be used (angled up/down)

2.4.2 - Left side and rear bumpers can also be removed (if desired) **rear RPM bumper is allowed: The

RPM Rear Bumper part #'s 81005, 81003 are the only (RPM) part that can be used**

2.5 - Major alterations to the chassis or modification to drivetrain/suspension components is not


2.6 - Electronics (rx/esc/amb) must be installed within chassis surface (no outside installation)

2.7 - Battery brace can be trimmed to allow different LiPo battery wire configuration


3.1 - Stock TRAXXAS 12t brushed motor with xl5 esc only (NO BRUSHLESS SYSTEMS/NO XL-5

HV), and in Race mode only ( NO Reverse ) if found using Reverse you will stop being scored and will

loose your best qualifying run that evening

3.2 - Spec ESC: XL5 only - no timing (boost / profile available) No XL-5 HV

3.3 - Original TRAXXAS 2075 servo

3.3.1 - The “SAVOX SC-0252MG Digital Servo” is allowed

3.4 - it is allowed to 'pin' the servo saver(white) or bell crank(black) advised the servo gears might get broken under a heavy crash!!!

3.4.1 - original TRAXXAS plastic servo saver/bell crank only (white or black system) it is allowed to mix the components (ie.. black servo horn with white bell crank)

3.4.2 - It is allowed to use a solid (one piece) servo horn (any brand)

3.5 - 2-cell 7.4v LiPo battery with a maximum of 5200mah and 50c, with external plug only (no “bullet type” connector)

3.5.1 - 7-cell 8.4V 3300mah NiMH Stick Pack alternate is allowed.

3.6 - Any radio is permitted.

3.7 – No modulation assists, no gyros, no traction control (mechanical or electronic). First found will

result of forfeit of that events results up to the point of discovery. Drivers found will be put to rear of

order in heats, or last feature if mains are on the line. If mains have started, driver may be disqualified

in full. Second time, forfeit of season points up to that point and disqualified from that event. Third

infraction, disqualified from NEMB Eligibility for duration of cycle. If found a fourth time, you will no

longer race with NEMB.


4.1 - TRAXXAS 86/90 spur with all transmission parts in place (slipper)

4.2 - Any pinion size

4.3 - No modifications can be made to the transmission internals or case (ie.. to allow locking effects or to fit a bigger gear ratio)

4.4 - The gear cover must be off at all times to allow for visual inspection (CARPET)...and removed if asked (DIRT)

4.5 - The only adjustments allowed to the car are those allowed by the original MFG components of the car

4.6 - You are allowed to use any original wheel spacer combination (Black, Grey or any combination of both)

4.7 - Transmission functionality rule (motor can not spin while turning slowly one rear wheel a full turn)

4.8 - Traxxas SLASH *STEEL* transmission gears only (internal plastic transmission gears not allowed)

4.9 - Adding weight (in any way) is not allowed, wheel balancing is allowed (sole purpose of balancing, not to add weight)


5.1 - TRAXXAS 2WD plastic shocks only (grey or black version) (fronts in front, rears in rear)

5.2 - Original Rear (TRAXXAS 5858) and Front springs (TRAXXAS 5857) (no LCG kit springs or aftermarket springs, striped springs will not be allowed to run)

5.3 - Front springs may be cut in order to shorten them (no more than 5 round removed)

5.4 - The shock’s travel may be shortened with internal shims (ie..fuel tube or solid shims...)

5.5 - Original shafts in original cylinder (length and type in proper cylinder)

5.6 - Original pistons from kit only (original 1,2 or 3 hole), no modifications can be made to them

5.7 - No front bump stop suspension, a single original blue bump stop can be used per rear shock (not


5.8 - No shimming allowed (to reduce slop in suspension parts)

5.9 - All suspension parts must remain in original positions it was designed for

5.9.1 - rear camber links must remain in original height /lower position (upper hole on shock tower not allowed)


6.1 - No tire traction additives, Only a soft cleaner can be used for the sole purpose of cleaning the tire (ie..Simple Green)

6.2 - All surfaces: JACO 2040 or 2050 Pink Compound Tires Only with a durometer reading at 30. LP options are allowed. ( May groove / cipe / true ) if desired but not necessary

6.3 - Carpet: JACO 2055 and LP options allowed

6.4 - Loose Dirt: TRAXXAS “spec” rubber tire/wheel/inserts only, any combination of those (ie..4 fronts, 4 rears, 3 front 1 rear...) (part# TRA5863-64-71-73-75)

6.5 - Plastic Wheel cap are allowed with a max dia of 3.125” and must be secured with a min of 2 screws/wheel.


Points at all regular events: 100-97-95-94-93-92-91-90 on down; +1 for TQ

Any event with a car found illegal before mains start will be full point paying events.

All races over 150L pitstops are allowed (with exception); over 200L pitstop is mandatory

Race durations can be changed after determinations are made on battery life, and the safety of

executing live pitstops.

In-Race Breakdowns: If you take the car off the track, it may come back on in A-Mains only. In main

events allowing a pitstop if not yet taking pit stop, then you may make repairs and count it as your stop.

Tech will be both planned and random.

Batteries will be tested before the racing, and before mains, along with spares for extra distance races,

and all elements above checked visually before going to the track. Batteries over the tour spec on the

tour meter will be burned down during the first round of heats, then sent to the rear for the second

round and not allowed to race in A-Mains.

Protest rules: If a competitor wants to protest a car there will be a $20 fee that needs to put up with in

5 minutes after a race and specified what you want Tech'ed.

Tech will only consist of 1 item only (ie:) Motor, Shocks, Battery, Speed Control, ect.

If the car is found legal $10 goes to the legal car and $10 goes to series.

If found Illegal the protester will get the $10 and $10 goes to series.

Cheating: If caught cheating by protest or in tech, you will forfeit all points up to that point, and those

events will count as your drops. If caught a second time, you will sit out a race and lose any remaining

drops. Third offense: you will no longer be welcome to participate on the tour.

Rough driving: Races, above all, should be fun. They should also be clean, and fair. If a driver is

determined to be out of control, rough driving or head hunting, they will be warned openly, and if it

continues, they will be pulled from the heat or feature in which the offense was committed, but allowed

to continue racing that day. A third offense in one day will result in a loss of points for the day and it

cannot be counted as a drop. A second instance of rough driving or a pattern of this habit may result in

further action, including being parked for a period of races, or losing drops.

This is to help expand and meet the requests of local drivers and tracks around the northeast. It is to be

a positive and constructive environment, and not to turn into a hub of complaint.

Timing Clause: In the rare case of a timing error: Any racer timed under 4 minutes will have their

lap rounded up to the next, anything longer than 4 mins will be recalculated, using 240 seconds divided

by the average lap time to get laps; laps will be rounded up to the next nearest lap.

Attendance clause: Drivers who leave before the main will be awarded points based on their order

after all drivers competing in mains are awarded points. If a driver is seeded, for example, in the Bmain,

and the order of the day includes an E-main, all drivers through the last-finishing active driver

will be scored, and then the departed driver(s) will be scored based on their qualifying spot, A-B-C-D and so on Mains behind those that actively raced in a preliminary feature. You must have one

qualifying effort in the book and have been seeded in one of the mains to score points if you do not

race in the mains.


13.5 MudBoss

Any Modified-type Body (specifically, Northeast Dirt Modified, Sail-panel Northeast Dirt Modified, IMCA-style Midwest Modified)

LCG Chassis Allowed

Any 13.5 motor

Blinky Mode

Open ESC No Timing

Any buggy or sct tire (no foams)

Any 2S 5200 Battery

Aluminum shocks and aluminum shock caps allowed (and any weight shock oil) and internal shock limiters allowed.

Aluminum steering parts acceptable

Caster blocks, steering block, camber links, and rear axle carrier upgrades are allowed.



10th scale 2wd Traxxas Slash Factory/Production chassis
traxxas slash sprint car conversion  
(conversion kits like Ultimate RC allowed) 

5200 2s lipo battery
Rubber tire only
open : Gearbox transmission

6x6 or 7x7 wing

open : motor from 13.5 to 17.5

Blinky Mode

open : ESC, no timing

2s battery only

Aluminum shocks and aluminum shock caps allowed (and any weight shock oil) and internal shock limiters allowed.

Aluminum steering parts acceptable

Caster blocks, steering block, camber links, and rear axle carrier upgrades are allowed


MR 1/10 Sprint Class 

Any 1/10th 2wd Model Sprint Cars.

Off-road buggy conversions,

Gearbox cars only

No direct drive or solid axles

any Transmission & gear box

Any 17.5 motor and esc combo

1/10 buggy based wheel and tires on front and rear.

Rubber Tires Only No Foams or silicone tires.

5200mah 2s lipo battery

top wing 7 x 7

any shocks

rpm upgrades acceptable

The MudBoss is an entry-level class, with input from a number of regional tracks. It is built on the affordable Traxxas Slash 2wd chassis, and competes on spec tires and spec batteries, stock motors and stock speed controls to make it a super affordable class that puts a premium on driver ability and setup. It’s to be a fun, spec class, allowing for competition on fairly equal grounds for everyone.