321B Samurai 3-Port .21 Engine Combo w/2060 Pipe (Turbo Plug) by ProTek RC

ProTek RC
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This is the ProTek R/C 321B "Samurai" Off-Road 3-Port Competition Engine Combo. This exclusive combo combines the powerful 321B "Samurai" with the silky smooth delivery only a ProTek R/C 2060 Tuned Pipe Set can deliver. This limited time combo delivers huge performance at a $29.99 value. Don't delay, available only while supplies last.

The 321B “Samurai” 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 elliptical aluminum carburetor restrictors that are included. The handcrafted powerhouse has been built meticulously by a world-renown Japanese engine manufacturer, to the specs of AMain.com’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.

ProTek R/C 2060 Tuned Exhaust Set (PTK-2060)
Designed for competition use, the ProTek R/C 2060 Exhaust Set is ready to win! With the EFRA 2042 Tuned Pipe at its heart, this finely-crafted exhaust system features a mirror like chrome-finished stinger with a high strength welded nipple. Designed with a wider, shorter body, the 2060 is ideal for high RPM performance and big track optimization. Additionally, the 2060 provides smooth power delivery, great run time and maximum top speed compared to the torque centric ProTek R/C 2090.



  • Includes 2060 Tuned Pipe and Manifold
  • Superior tunability
  • Low CG cooling head
  • Increased fuel mileage
  • Unrivalled power
  • Smooth and responsive power band
  • Custom 7 & 8mm elliptical restrictors
  • Ceramic rear bearing
  • ABC piston and cylinder
  • Ultra hot ProTek P3 turbo glow plug
  • Strengthened black-coated crankcase

2060 Tuned Pipe Set Features:

  • Mirror chrome like finish
  • Durable high-strength welded nipple
  • Wide, short body design
  • Maximum high-end RPM performance
  • Smooth power delivery, great run time, maximum top speed

Recommended Glowplug:

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

3.46cc (0.211cu.in.)
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" Off-Road Buggy Engine
  • (1) 2060 Tuned Pipe & Manifold Set
  • (1) P3 Turbo Glow Plug (Ultra Hot)
  • (3) High Temp Exhaust Gasket
  • (1) 7mm "Elliptical" Aluminum Carburetor Restrictor 
  • (1) 8mm "Elliptical" Aluminum Carburetor Restrictor
  • (2) Long Manifold Exhaust Springs
  • (3) Short Tuned Pipe Exhaust Springs
  • (3) Dust Caps (3mm, 16mm & 17mm)
  • (1) Instruction Manual

This product was added to our catalog on October 2, 2014.

Erik Hames
Verified Owner
Sunday, Nov 2 2014 (about a year ago)
ProTek RC 321B Samurai 3-Port .21 Engine Combo w/2060 Pipe (Turbo Plug)
I can not recommend this engine highly enough! I have one in both my D812 and D8T TTE, and wow it has so much power and it is super smooth and easy to control.
Eddie Garcia
Verified Owner
Tuesday, Oct 6 2015 (about a year ago)
ProTek RC 321B Samurai 3-Port .21 Engine Combo w/2060 Pipe (Turbo Plug)
Fast, fast, fast, and smooth, a beast is hidden within, good mileage as well. Buy this motor!
tom soares
Verified Owner
Friday, Aug 21 2015 (about a year ago)
ProTek RC 321B Samurai 3-Port .21 Engine Combo w/2060 Pipe (Turbo Plug)
I bought this Protek 321b With the 2060 Pipe, WOW what a great motor.. Easy to tune fast in my losi 8ight 3.0 If you are looking for a motor this is it.. I am getting 9.5 Min. on a tank...Thanks Amain/Protek for a great Motor.
Richard Hess
Wednesday, Mar 25 2015 (about a year ago)
ProTek RC 321B Samurai 3-Port .21 Engine Combo w/2060 Pipe (Turbo Plug)
Awesome Motor has to be one of, if not the easiest motor ever to break in and tune !!! great power great run time super smooth power band. And that wooden box it comes in is a nice touch
chad shorkey
Wednesday, Oct 22 2014 (about 2 years ago)
ProTek RC 321B Samurai 3-Port .21 Engine Combo w/2060 Pipe (Turbo Plug)
Of course because it's a re-branded O.S. speed. But for less money. Can't Beat that!
Mike Bellotti
Thursday, Oct 9 2014 (about 2 years ago)
ProTek RC 321B Samurai 3-Port .21 Engine Combo w/2060 Pipe (Turbo Plug)
This has to be the greatest thing to happen for the hobby in a long time. Finally, you don't have to be a millionaire to run what the pros run, as a team protek driver I had to have this engine and boy was I impressed, the quality is absolutely top notch as you would expect. The power is amazing and the price is un beatable. I recommend it whole handedly
Francis Lacombe
Verified Owner
Thursday, Aug 13 2015 (about a year ago)
ProTek RC 321B Samurai 3-Port .21 Engine Combo w/2060 Pipe (Turbo Plug)
vraiment un très bon moteur souple performant et facile a ajuster , déjà 9 galons de nitro sans aucun problème. parfait pour la compétition.
Thomas Jennette
Verified Owner
Sunday, Apr 17 2016 (6 months ago)
ProTek RC 321B Samurai 3-Port .21 Engine Combo w/2060 Pipe (Turbo Plug)
I have to say that this is one of the best motor/pipe combos I have ever used. I put one in my TKI4 I just built and all I can say is WOW! I only have about a gallon through it, but it was an easy break in with 3 tanks at fast idle, 5 tanks heat cycled, and 3 tanks tuning for 1st race. I ran it a little rich on top but still had ample power to TQ, and win. This motor has a very smooth power band and idles perfectly all day! I can't speak to the longevity yet, but I will post more as the season goes on. For 1st impressions I have to give it my highest recommendation A+++.