REDS 321 Buggy Engine Estremo X Line DLC Ceramic 16%
REDS 321 Buggy Engine Estremo X Line DLC Ceramic 16% – view 2
REDS 321 Buggy Engine Estremo X Line DLC Ceramic 16% – view 3
REDS 321 Buggy Engine Estremo X Line DLC Ceramic 16% – view 4
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Reds Racing

REDS 321 Buggy Engine Estremo X Line DLC Ceramic 16%

£429.99
In Stock — ships today
No import duty or VAT to pay
We are the importer of record — the price you see is the price you pay.
UK warranty & returns
Handled by us in the UK under the Consumer Rights Act — no sending it overseas.
SKU REDENBU0042 Category Reds Racing Parts
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24hr or 48hr delivery — choose at checkout ✓ Free delivery on orders over £129.99

What our customers say

A selection of recent five-star reviews, as written.

  • Ordered flishrc cobra. Communication was great. Ordered larger batteries but they were the wrong size. Olly shipped the right batteries and gave a refund for the difference I paid. Couldn't ask for more. Thanks for the help with the order.

    Robert, 22 September 2026

  • Very helpful when the vehicle I wanted wasn't in stock. Very fast deliver too.

    Anna Abbott, 17 September 2026

  • Excellent service speedy delivery and good customer service

    GLYN, 10 September 2026

  • Great product and service. I enjoy buying from these guys. Thanks to radio-controllled.co.uk.

    Paul Jordan, 3 September 2026

  • Dealt with customer services over an order I accidently placed, they were prompt and dealt with it will, completely refunded within a small window of time, thanks!

    Oliver Galustian, 23 July 2026

  • Really good online rc store with some great products and sales on. The owner is very knowledgeable as well.

    Simon, 19 July 2026

  • Product delivered promptly and in excellent condition 👍had very helpful and prompt responses from Olly to all my questions, I will definitely be using them again 👍

    Mark Clucas, 30 January 2026

  • The customer service and advice were first class!

    Steve Avery, 9 September 2025

  • The seller knew I was after one and very kindly informed me when they came back into stock so now have a Flywing Bell 206. Fantastic bit of kit. Well worth the wait.

    Pete Goddard, 15 April 2025

  • Great service, car arrived fast and really well packaged. Also, I had a little problem....(which turned out to be me doing it wrong) but someone replied the same evening! Will definitely be buying from them again.

    Graham Rousseau, 10 February 2025

🚚 Calculating…
24hr or 48hr delivery — choose at checkout ✓ Free delivery on orders over £129.99

About this product

Description

FEATURES

The 321 ESTREMO™ is the first engine of REDS Racing’s new X Line, combining Italian engineering with Japanese precision from O.S. Engines. This 3-port engine delivers exceptional torque and instant throttle response, ideal for technical tracks and big jumps. The cylinder design and ultra-lightweight piston optimize air-fuel mixture flow, maximizing overall power output. The AirBoost™ backplate and 21J carburetor with Venturi XFlow™ ensure easy tuning, improved efficiency, and consistent performance on every track.
Manufactured in Japan and assembled by Mario and Marco Rossi, the 321 ESTREMO™ represents the perfect fusion of Italian racing passion and Japanese craftsmanship.

Technical Data

<Technical Specifications>

Category: 1/8 Buggy and Truggy

Displacement: 3.5 cm³

Bore x Stroke: 16.4 × 16.4 mm

Ports: 3 intake, 1 exhaust

Front Bearing: 7×19×6 with high-performance seal

Rear Bearing: 14×25.4×6 – 9-ball high-durability ceramic bearing

Carburetor: OS 21J with Venturi XFlow

Venturi Diameter: 7 mm (optional: 6 mm or 8 mm – body 9 mm)

Backplate: AirBoost™ DLC-coated

Crankshaft: DLC-coated with two tungsten balancing weights

Weight: 345 g

Recommended Fuel: 16–30% nitro with 8–10% oil

Glow Plug: REDS TS3 or TS4

Exhaust System: 2143 X-ONE X Line

Clutch: REDS TETRA-X

Kit Contents

Required For Operation


Browse the full Reds Racing range at Radio Controlled UK, including Reds Racing competition nitro engines and exhaust systems for demanding RC racing classes. View all current stock in the Reds Racing product archive.

What our customers say

A selection of recent five-star reviews, as written.

  • Ordered flishrc cobra. Communication was great. Ordered larger batteries but they were the wrong size. Olly shipped the right batteries and gave a refund for the difference I paid. Couldn't ask for more. Thanks for the help with the order.

    Robert, 22 September 2026

  • Very helpful when the vehicle I wanted wasn't in stock. Very fast deliver too.

    Anna Abbott, 17 September 2026

  • Excellent service speedy delivery and good customer service

    GLYN, 10 September 2026

  • Great product and service. I enjoy buying from these guys. Thanks to radio-controllled.co.uk.

    Paul Jordan, 3 September 2026

  • Dealt with customer services over an order I accidently placed, they were prompt and dealt with it will, completely refunded within a small window of time, thanks!

    Oliver Galustian, 23 July 2026

  • Really good online rc store with some great products and sales on. The owner is very knowledgeable as well.

    Simon, 19 July 2026

  • Product delivered promptly and in excellent condition 👍had very helpful and prompt responses from Olly to all my questions, I will definitely be using them again 👍

    Mark Clucas, 30 January 2026

  • The customer service and advice were first class!

    Steve Avery, 9 September 2025

  • The seller knew I was after one and very kindly informed me when they came back into stock so now have a Flywing Bell 206. Fantastic bit of kit. Well worth the wait.

    Pete Goddard, 15 April 2025

  • Great service, car arrived fast and really well packaged. Also, I had a little problem....(which turned out to be me doing it wrong) but someone replied the same evening! Will definitely be buying from them again.

    Graham Rousseau, 10 February 2025

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