You have no items in your shopping cart.

ProTek RC 321B Samurai V2 3-Port .21 Competition Buggy Engine (Turbo Plug)

Quick Description
SKU: PTK-2500
Availability: 1 in stock
Manufacturer: ProTek RC
SKU: PTK-2500

Stock motors are the ONLY way to go. Don't believe us? How about the worlds best drivers? 

  • This is the ProTek R/C 321B "Samurai V2" Off-Road 3-Port Competition Buggy Engine. The 321B “Samurai V2” Off-Road 3-Port engine is ready to lead you into battle – a samurai, by definition, is a noble, powerful warrior willing to serve his master – with a short-stroke, turbo head, rear ceramic bearing and legendary, easy-to-tune carburetor, it’s easy to see why the ProTek racing engine bears the Samurai moniker!

    The Samurai sips fuel without sacrificing horsepower thanks to the new LRT carburetor. The handcrafted powerhouse has been built meticulously by a world-renown Japanese engine manufacturer, to the specs of AMain’s top pro drivers.

    The Samurai delivers a versatile package like no other – excellent fuel mileage, predictable, crisp throttle-response and consistent carburetor settings are all traits every racer needs to stand atop the podium – to be crowned the master of his class. 

    The Samurai 321B has been meticulously designed and crafted in Japan by a leading maker of model engines. It has been manufactured in limited production runs guided by nearly 80 years of experience and an unrelenting commitment to both quality and performance.




    • Superior tunability
    • Low CG cooling head 
    • Increased fuel mileage
    • Unrivalled power
    • Smooth and responsive power band
    • 6 & 6.5mm circular restrictors
    • Ceramic rear bearing
    • ABC piston and cylinder
    • Ultra hot ProTek P3 turbo glow plug
    • Strengthened black-coated crankcase
    • Utilizes LRT Carburetor (PTK-2570) 

    Recommended Exhaust:

    • PTK-2060: ProTek R/C 2060 Tuned Pipe w/Manifold (PTK-2060-1: pipe only) 
    • PTK-2090: ProTek R/C 2090 Tuned Pipe w/Manifold (PTK-2090-1: pipe only)

    Recommended Glowplug:

    • PTK-2542: ProTek R/C P3 Turbo Glow Plug (Ultra Hot) 

    3.46cc ( 
    16.6mm (0.654in.) 
    Stroke: 16.0mm (0.630in.) 
    Practical R.P.M.: 3,000 - 40,000 
    Power Output: 
    2.5ps / 34,000 R.P.M. 
    355g (12.52oz)


    • (1) 321B "Samurai V2" Off-Road Buggy Engine 
    • (1) P3 Turbo Glow Plug (Ultra Hot) 
    • (1) High Temp Exhaust Gasket
    • (1) 6mm "Circular" Aluminum Carburetor Restrictor 
    • (1) 6.5mm "Circular" Aluminum Carburetor Restrictor
    • (3) Dust Caps (3mm, 16mm & 17mm) 
    • (1) Instruction Manual
Product tags