The JRspec S300SX JB turbocharger features high-quality floating bearings manufactured in Japan, making it a popular choice for tuning applications. It is equipped with a CNC forged compression wheel (billet wheel) that enhances engine power while maintaining a similar spool to standard versions. Assembled in the EU, this turbocharger utilizes precisely fitted parts made from top-grade materials and advanced machinery. With five stages of rotor balancing reaching up to 250,000 rpm, it ensures reliable performance even under extreme conditions, high boosts, and temperatures.

JRspec turbochargers have proven their worth in motorsport, being utilized in various applications such as drag racing and drifting. Notable examples include the Tsunami setup with two R30 engines and two JRspec GT42R JB turbo engines, delivering approximately 2300km of power, and Paweł Trela's 2JZ engine paired with a JRspec GTX3582R + BB turbo, producing around 900km of power. Kornel Pruss's LS7 engine with a JRspec GT45R JB turbo also exceeds 1000km of power.

The hybrid ceramic ball bearings significantly enhance turbine spool, allowing for quicker engine response to throttle input and achieving high torque at lower RPMs compared to traditional slide bearings and standard ball bearings. This feature is particularly beneficial for drifting and street applications where engine flexibility is crucial.

Specifications:

• Capacity: up to 1000HP
• Application: 2.5 - 4.5L engines
• Bearings: Floating bearings (made in Japan)
• Restrictor: Recommended diameter for oil pressure is 1.6mm at 5B
• Suction impeller: Inducer 65mm, Exducer 96.3mm
• Exhaust rotor: 80mm
• Exhaust shell: Flange T4 Twin Scroll