Rules of Oval Track

Minimum Weight: 1lbs.10oz. (26 ounces/737 grams)
If needed, any additional ballast or lead must be added within the center battery section of the chassis only (top deck is fine.)
Minimum Ride Height: 6mm (0.236in.)
Any 2/3a NiMH battery up to 5 cell 1500mah is allowed. No Li-Po.
All parts and pieces must remain stock and unaltered unless otherwise stated. No milling, cutting, dremeling, drilling extra holes, or modifying of the chassis or any part of the car to alter the geometry or original design or to reduce weight.
No parts can be removed unless otherwise stated. Any allowed modifications or aftermarket parts will be listed below.

Filing a moving part to correct binding from the factory is allowed.
Shimming to fix slop or adjust chamber/steering links is allowed.
Shimming suspension mounts, suspension arms and/or C-Hubs after removing material may be considered altering of the original design and will not be allowed.
New aftermarket steering drag-links and bell-cranks are allowed. However, the drag-link and bell-crank system must be the same dimension and geometry as the stock Losi drag-link.
Aluminum Front (top and bottom) bulkhead is allowed along with a front bulkhead brace.
Aftermarket shocks and springs are allowed.
Removing the rear lower shock mounts and mounting the shocks directly to the arm is allowed.
Adjustable turn-buckles and aftermarket ballcups are allowed.
New aftermarket CVD's are allowed.
Any aftermarket mini-t ball-differential is allowed.

The electronics can be moved to personal preference, but must remain within the chassis plate area. The battery can be mounted in either the center or left location. The plastic battery retaining strips may not be removed or altered to allow the battery to be moved further left. The battery must remain in one of the two stock locations and secured with the stock battery strap.
You may change out the radio/receiver and servor for your preference.
Aftermarket connectors may be used for battery to electronic speed control connection. No hard wiring the battery to the ESC. Must use connectors.
Additional fans, heat-sinks, or motor coolies for the motor or ESC is not allowed.

Drivers will have a choice between the stock Losi Motor or the 4200kv Mamba brushless motor.
If the Stock Losi Motor is used, the stock ESC and motor must be used (ESC part #:LOSBO826 / Motor part3:LOSB1216) The motor, brush springs, and brushes must remain unaltered, stock from factory, may also be changed to an after market plug. The stock connectors for Motor to ESC must also be used. Note Brushed Gear Rule: 16/60 (aftermarket gears are allowed but must be 16/60)
If the Mamba 4200kv Brushless motor is used, then drivers will only have the choice of Castle Creations Mamba-25, Sidewinder, or MicroPRO speed controls. Other ESC's are not allowed until approval prior to use. Brushless Gear Rule: Unlimited

Stock, out of box Tires, Wheels, and Inserts may be used (Fronts #LOSB1169/ Rears #LOSB1184). Mixing front compound tires with rears and vice-versa is allowed. Altering the inserts or wheels in any way will not be allowed. LOSI stock tires on RPM wheels may also be used. (Painting or coloring the wheels or using mud covers is fine.)
Gluing and/or taping the tires to prevent traction rolling is allowed. Non Wintergreen based tire additive is allowed.

Losi 18th Latemodel Bodies only. All windows in body must remain intact and unaltered.

Part #:LOSB1317 (Clear)

Part #:LOSB1380 (Silver)

Part #:LOSB1381 (Black)

Part #:LOSB1382 (White)

Part #:LOSB1383 (Red)

Minimum body height: 3.5in (measured at highest point of roof.)
The rear detachable wing (spoiler) is optional (Part #:LOSB1334)
The front body supports (located on top of front shock tower) must be run on the car in the stock location unaltered. This cannot be altered to lower the body.
Intentional flaring of front fenders or rear quarter panels are not allowed. Adding extra fins, spoilers, belly-pans, side dams or any other additional aero devices to the car or body is also not allowed.