REDS Racing Buggy 521 Sport RC Nitro Engine Tuned by Mario Rossi Race Combo
Description
REDS Racing Buggy 521 Sport RC Nitro Engine tuned by Mario Rossi Race Combo
The REDS Racing 521 Sport RC nitro engine in the exclusive race combo with chromed EFRA2143 exhaust system is a high-quality masterpiece for ambitious RC drivers who expect maximum performance and uncompromising build quality. Inspired by its big brother in the 721 series, the REDS 521 Sport brings fresh momentum to the mid-range — with improved throttle response, greater stability and outstanding fuel efficiency. Tuned, assembled and tested by hand by none other than Mario Rossi, every engine is a one-off built with precision and passion, made in Italy.
Key features
- Perfectly matched race combo: Includes the chromed EFRA2143 exhaust system — for sharp power delivery and unbeatable value compared with buying separately.
- Newly developed 5-port piston and sleeve set: Optimised gas flow delivers noticeably more efficiency, smooth power and excellent throttle response.
- Carburettor refined in detail: New O-ring seal for improved sealing, easier tuning and stable running even as grip conditions change.
- Hand-tuned by Mario Rossi: Every component is individually matched, measured and tested within the tightest tolerances — for the highest quality and reliability.
- Flow-optimised crankshaft with silicone fill: Supports a strong torque curve and reduces fuel consumption.
- High-quality bearings: Japanese and Swiss steel ball bearings guarantee maximum smoothness and durability in tough race conditions.
- Lightweight cooling head: Efficient heat management through reduced weight and optimal temperature control — perfect for any weather.
- High-performance ignition: The "C3" UltraHot glow plug delivers stable, easily tuned and reliable engine behaviour right from run-in.
Who is this model for?
The REDS Racing 521 Sport is aimed at RC enthusiasts, ambitious hobby drivers and collectors looking for a powerful, finely built model vehicle. Ideal for 1:8 off-road competition, as a technical highlight in the hobby room or as an exclusive gift for true motorsport fans.
Step up to the professional class now — secure this race combo with its perfect tuning and quality.
Disposal of old batteries
Disposal of old batteries
Battery withdrawal - information according to the battery network
Since batteries and batteries can be included in our programs, we are obliged to point out the following according to the battery law (BATTG): Batteries and batteries must not be disposed of in household waste. They are legally obliged to return used batteries and batteries so that professional disposal can be guaranteed. Old batteries can contain pollutants that can damage the environment or health if not properly stored or disposal. Batteries also contain important raw materials such as iron, zinc, manganese or nickel and can be used.
Old batteries and batteries can be handed over at the public collection points of the municipality free of charge and wherever batteries and batteries are sold in the relevant type.
Pollutant batteries or batteries are marked with the following symbols in order to refer to the household waste disposal ban. The chemical symbol for the heavy metal is given under the sign:
The sign with the rubbed garbage can means that you are not allowed to dispose of batteries and batteries in household waste. Under this character you will find additional symbols with the following meaning:
- PB: Battery contains lead
- CD: Battery contains cadmium
- Hg: Battery contains mercury
Rückgabe & Garantie
Rückgabe & Garantie
✅ 14 Tage Widerrufsrecht ohne Angabe von Gründen
📦 Rückversand:
• Rückversandkosten trägt der Kunde
• Originalverpackung wird empfohlen
🔍 Zustand:
• Artikel muss unbenutzt und unbeschädigt sein
• Alle Originalteile und Verpackungen müssen enthalten sein
💰 Rückerstattung:
• Kaufpreis wird nach Prüfung vollständig erstattet
• Bearbeitung innerhalb von 7 Werktagen
📋 Bei Defekten:
• Kostenloser Umtausch oder Reparatur
• Rückversand auf unsere Kosten
Product information
Product information
The Product Safety Ordinance (GPSR) ensures that only safe products are launched on the market that neither endanger health nor the security of consumers. With compliance with the GPSR, we, as a company, are actively contributing companies with a company headquarters in Germany to product safety and consumer protection.
Listed below you will find all relevant information:
1. Manufacturer name: Reds Racing S.r.L
Località carabioli, 2c
25060 Cellatica BS, Italy
E-mail: info@redsracing.it
2. Sales partner: RMV Germany
Römerstrasse 301-303
46519 Alps, Germany
E-mail: info@rmv-deutschland.de
The RC Auto Tuninge parts, engines, tools and corresponding accessories from Reds Racing are no toy! Recommended from the age of 14. Use only under the immediate supervision of adults. Please note the information on the disposal of old batteries: https://www.rmv-deutschland.de/hinweis-nach-batteriengesetz
After delivery, our items are professionally positioned in our warehouse and provided with a permanent storage space. During the entire storage period, we ensure that all conditions are observed to preserve product quality and security. When transported, we also attach great importance to safety: all goods are carefully packed to protect them from damage and hand over to our customers ready for dispatch. In addition, warnings, symbols or other safety -relevant information are published directly in the product image. If this is not possible, we provide this information under the additional point "Download" as supplementary PDF documents.
As long as the products are in our responsibility, we make sure that neither the storage nor the transport conditions affect conformity with the general security requirement. It is our aim to ensure that our products do not develop new risks for consumers by handling and storing.
