ProTek RC PTK-2521 Aluminum Samurai RM, S03 & R03 Carburetor Restrictor (8mm)

This is an optional ProTek R/C Aluminum Samurai RM, S03 and R03 Carburetor Restrictor. Available in 6mm through 8mm diameters, ProTek R/C carb restrictors are an excellent way to tune the power delivery of your Samurai 321B for any track condition. Plus, they are also compatible with OS V-Spec, Novarossi and RB carburetors.

The carburetor restrictor (or venturi) is used to adjust the flow of air into the engine. By changing the size of the venturi, you can fine tune the power delivery and run time of the engine. A larger venturi will increase top end power and is better suited to larger tracks, but will reduce run time. A smaller venturi will improve bottom end throttle response making them a good choice for small tracks, and will help to improve run time compared to a larger venturi.  

Note: For replacement restrictor o-rings, see part PTK-2517. 

Compatibility 

• Mugen Seiki Ninja JX21 B01
• Novarossi 367
• Novarossi 528X
• Novarossi BS-21SB
• Novarossi N21BF
• Novarossi P5
• Novarossi Plus 21-4 C
• Novarossi Plus 21-5
• Novarossi Plus 21-7BT
• ProTek R/C Samurai 321B
• RB Products Buggy 9/10/11
• RB Products C5/C6
• RB Products Circuit 9/10/11
• RB Products Classico 9/10/11
• RB Products Cross 10/11
• RB Products Fire 11
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• RB Products Junior 9/10
• RB Products KANAI Limited Edition
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• RB Products Touring 9/10 RC/11 RC
• RB Products Touring 9/10/11
• RB Products WS7
• RB Products World Series 9