Thunder Tiger R/C Pro-21BX-R Car Engine

Brand: Thunder Tiger

Model Number: TT9475

5% offWas $181.24Now $172.18Save $9.06Excl VAT: $143.48* Prices in US Dollar

The Thunder Tiger Pro-21BX-R Car Engine is designed to achieve the easiest operation and max performance over & over, delivering awesome raw power & durability! The new webbed reinforced compact crankcase is made for added wearing resistance and provides effective heat dispersion for longer runs.

All PRO series engines are manufactured by automated computer-controlled machinery, using the highest quality materials and state-of-the-art CNC manufacturing techniques to deliver a powerplant that looks and performs better. Precision mixture control carburetor makes adjustments simple, the crankshaft is lightened, and balanced to achieve a smoother and more efficient fuel mixture.
The new 21 engine fits in the same mounting as the original .21/.28 engines, with no additional weight - but delivers greater output and higher practical rpm.

The Pro-21BX-R is equipped with a built-in recoil starters ("X" type) for easy and quick start.


  • Rear exhaust
  • ABC construction: Aluminum piston with Cr-plated brass cylinder liner
  • Hypereutectic machined Al-Si ringed piston
  • High-strength connecting rod with bushings pre-installed
  • SG crankshaft
  • One-piece crankcase with squared-off cooling fins
  • Dual ball bearing-supported crankshaft
  • Machined over-sized heat sink head
  • Built-in pull starting backplate
  • Three-needle valves slide valve carburetor
  • State-of-the-art CNC machined components
Manufacturer: Thunder Tiger
Model: TT9475 Pro-21BX-R Car Engine

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Wonderland Models deliver throughout the UK and Overseas. We endeavour to despatch orders immediately but certainly within 48 hours of receipt. Orders will only be dispatched once payment has been received. 

UK Delivery:
Order value (including postage) up to £70: First Class Royal Mail £3.95
(Delivery Within 1-5 Days)
Order value (including postage) over £70: Interlink Express £6.95 (Courier Delivery Next Working Day).

Please be sure to give us your mobile phone number when ordering as Interlink Express offer an email/text message option to enable you to receive notification of despatch and estimated delivery time. The express service requires a signature on delivery and must be ordered before 2pm for next working day delivery. The courier does not deliver on a weekend or bank holidays.
Express delivery is two days to some postcodes, and these incur a £6 surcharge. A list of applicable postcodes can be seen here.

Overseas Delivery:

European deliveries are sent by Interlink Express/DPD. For details of delivery costs and times by country please click here.

Delivery to Australia, New Zealand, Canada, Japan and the USA is by Royal Mail or FedEx courier and is calculated on an order by order basis based on weight and size. We will contact you with the shipping costs on receipt of the order.

For full shipping details please see the delivery section of our website here.