REDS 521 Sport .21 Off-Road Competition Buggy Engine Combo w/2143 Tuned Pipe & M Manifold (Broken In)

The REDS 521 Sport .21 Broken In Off-Road Competition Buggy Engine Combo with 2143 tuned pipe and M manifold (REDKM210011), delivers a high-end balance of innovation, and quality, and performance - at a mid-range street price. The 521 Sport features technical changes in the 5 port sleeve, combined with updated materials to offer users high reliability, tuning stability, and fuel mileage. The 521 Sport guarantees excellent performance at a reasonable price.This combo has been broken in using a specific blend of oil for breaking-in nitro engines using the Oil Bath Lapping Machines. The pre-break-in process saves time, and fuel and increases the performance over the traditional break-in process. Only a quick, post-oil bath, break-in process is keeping you from experiencing quality and performance.Features: ALUMINUM CARBURETOR: 521 Sport engine includes the same aluminum carburetor as 721 engines to guarantee reliability and tuning stability. The insulator bushing has been improved with aerospace-grade ultra high strength polymer. Furthermore, the GEN2 carburetor features a double grub screw joint link to allow positioning and fitting with any servo linkage system. STATE OF THE ART DIE CASTING: The unique high stiffness crankcase design is produced with a high-quality pressure die casting process and special aluminum alloy developed by REDS Racing engineers to guarantee higher stiffness and strength. 5 PORT TECHNOLOGY: The piston and sleeve feature updated materials. Thanks to updated 5 port technology, this engine provides really good fuel mileage and a smooth power band. HANDMADE, TUNED, AND ASSEMBLED: Every single engine is hand inspected and compression checked inside REDS Racing headquarters by Mario Rossi to achieve the highest quality standards. Specifications:Category: 1/8 Buggy and TruggyDisplacement: 3.5ccBore: 16.2mmStroke: 16.9mmIntake ports: 5Exhaust ports: 1Front Bearing: 7x19x6mm rubber sealRear Bearing: 14x25.4x6mm Swiss-made steelCarburetor Venturi: 7.0mm (6.0, 6.5, 7.5, 8.0 optional)Carburetor: VCX2-A Aluminum Short needleWeight: 345gFuel consumption: > 9:00 minEngine temperature: 110-130°CRecommended Glow plug: REDS TS3Recommended pipe: REDS 2143 + M or XONE TorqueRecommended fuel: 25-30% nitro, 8-10% oilBreak-in fuel: 12% oil