Mach 2 .21 SG Buggy Engine w/Pull-Spin Start Combo by Dynamite

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This is a Dynamite Mach 2 .21 SG nitro buggy engine, with a combination pull/spin start backplate.

Dynamites Mach 2 series engine line ignites the industry with the .21 SG with pull/spin start combo nitro engine. Known for explosive power, reliability and all out performance, Dynamite engines are becoming the engine of choice for many RC sport racers. The 13mm turbo ported crankshaft along with the ABC 6 port piston and sleeve allow this engine to deliver superior horsepower, high torque and extreme efficiency matched only by engines at much higher price points.  Engine startup is as easy as utilizing the built in pull start mechanism or by using a spin starter.  The Dynamite .21 SG incorporates the technology and design advances developed from the Dynamite Platinum .21 XP in a sport version.  Whether you're upgrading your existing nitro vehicle or looking to build a competitive racer, look no further, the Dynamite .21 SG engine has everything you need to be successful in the backyard or at the track.

Key Features:

  • 13mm turbo ported crankshaft
  • 2 needle carburetor
  • ABC 6 port piston and sleeve
  • Knife edged connecting rod
  • Pull start/Spin start combo equipped


  • Type: 2-stroke
  • Displacement: .21
  • Bore: 16.27mm
  • Stroke: 16.75mm
  • Engine (Only) Weight: 410g.
  • RPM Range: up to 30,000
  • HP: 2.3
  • Front Bearing Size: 7X19X6
  • Rear Bearing Size: 13X24X6
  • Cylinder Type: ABC
  • Starting System: Pull start/spin start combination system
  • # of Ports: 6+1
  • Carb Type: 2 needle slide
  • Crank Type: SG

This product was added to our catalog on July 3, 2009.

gary maurer
Verified Owner
Monday, Jun 14 2010 (about 6 years ago)
Dynamite Mach 2 .21 SG Buggy Engine w/Pull-Spin Start Combo
I like everyone else out there wants an engine that has alot of snap to the throttle, a high top end, and good torque in the corners but most of all starts easy. Ihave been around this hobby along time and I have seen engines come and they go. They talk the talk but can't walk the walk. From the first pull on my engine, I have been pleased with it. I took my time to break it in and followed the mfg. book on start ups, and someone really knows their stuff there. I can put in a BIG gear and it spins all 4 wheels. It responds to fine adjustments too. Just have your temp. gun handy and use it alot. When this engine is ready for a final tune up, you will know. It takes the fine tune good and the fun begins. This is a good buy and well worth the price. When you are in the 1st race for this engine, hang on, you will be amazed at what it can do. -//- I bought this engine about 4 months ago. I use it at the race track and it can hold its' own when put up against other brands of engines. Now I have other brands and bigger engines at home as well as my own track. I have had the stop watch put on it and it can hang right there with the .28 engines. Pleased, you bet. I will buy another one soon as a spare. A lot of performance for the money. OleGary73
messias nogueira
Verified Owner
Sunday, Jan 24 2010 (about 6 years ago)
Dynamite Mach 2 .21 SG Buggy Engine w/Pull-Spin Start Combo
Easy break in! Easy to tune! A great engine for a sport racer
eric stump
Verified Owner
Monday, Oct 8 2012 (about 4 years ago)
Dynamite Mach 2 .21 SG Buggy Engine w/Pull-Spin Start Combo
crappy pull start. made it thru the first 5 tanks of break in and the pull start took a crap. No shaft start or starter box, so now i'm waiting...again. runs good tho, just watch out for the pull started, it sucks.
Verified Owner
Monday, Jul 13 2009 (about 7 years ago)
Dynamite Mach 2 .21 SG Buggy Engine w/Pull-Spin Start Combo
Well done A-Main!!!!!! Better price than Dynamite RC. One is on it's way to me for testing. -//- Have to agree with by on this one. I noticed this engine @ $134.99 and thought that it would be good value for money. Started to get my order ready and put it in my cart and the price had jumped to $199.99. Not a good sign when Dynamite RC has it listed for $134.99. Ah well, one less thing in my cart. This review is not aimed at the engine at all, but more so at A-Mains pricing of this engine????????????????????????
Saturday, Jul 11 2009 (about 7 years ago)
Dynamite Mach 2 .21 SG Buggy Engine w/Pull-Spin Start Combo
why is this being sold at $200? the price was $135 last I checked.