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bulletIKS allows Old Style Yamaha Cylinders and Heads to compete in IKS. 
bulletAIR BOX - Must conform to WKA guidelines per class description's.
bulletIKS requires all 4 strokes to run an approved exhaust silencer. All Shifters are required to run an exhaust silencer. IKS will police the noise issue, we will use the equipment flag to remove any competitor that is in non-compliance. 
bulletIKS can and will revise the Engine Tech to ensure fair and impartial treatment to all associates.   
bulletTaG
Engine TaG Senior Lite TaG Senior Heavy TaG Junior
Rotax 365 380 Rotax Jr. Exhaust / 320
BM Jaguar 350 365 30mm Exhaust / 320
Easy Kart 350 365 30mm Exhaust / 320
Leopard 365 380 30mm Exhaust / 320
PRD 350 365 30mm Exhaust / 320
Vortex Rok 350 365 Stamped w/Muffler / 320
Vortex Rok TT 370 385  
Sonik VX 365 380  
Sonix TX 380 395  
Comer 380 395  
Motori Seven 365 380 30mm Exhaust / 320
Cheetah SQ 350 365  
    
bulletHonda Clone
Claimer Rule: Claimer rule applies to any engine starting a qualifying period or race, $150.00 cash fee required to claim an engine, Applies to engine only, no accessories, Exchange of cash and engine in tech only, If you have an engine claimed, you cannot reclaim that engine at a later date, Failure to comply with the claimer rule will result in a ban from competition in this class.
Removal of the Governor and Low Oil Shut Off is allowed. Optional fuel tank removal is permitted. THESE ARE THE ABSOLUTE LIMITS OF MODIFICATIONS.
No Carburetor modifications, choke must remain intact and operational. No boring or trimming of any carburetor or plastic adapter internally or externally. Idle mixture screw may have the plastic cap removed to allow idle adjustment.
Recoil Starter that comes with the engine must be attached at all times and be used for starting. Electric starters prohibited.
Stamped steel drum shoe type clutches only. Cutting of clutch shoes prohibited.
Allowed engines - Harbor Freight Blue (Honda clone) Greyhound, Similar Yellow or Black (Honda clone) 6.5hp engines at this time. All engines must meet the specs of the Harbor Freight engines.
Number 219,35  or similar chain types only.
Header and Muffler requirements:  Any single stage, one piece header made from .750” O.D. steel tubing is allowed, including the RLV header, part #5438C. Any Briggs and Stratton tube style muffler part #89966 or it’s aftermarket equivalent (for example rotary power or the RLV silencer, part #4104) installed at the end of pipe. The tube style muffler may either be welded or tread fitted to the pipe end. The entire exhaust pipe, including the muffler, must be between 10” (minimum) and 14” (maximum).