JUN AUTO Chromoly Lightweight 1pc Flywheel Datsun L-Series 4.9kg/10.78lbs. #2001M-N003. Datsun 240Z – 280Z 1970-1978 / Datsun 510 – NISSAN L20/L24/L28. Reduce unsprung weight, rev up quicker! JUN Auto is The Premier Manufacturer/Tuner in Japan.

JUN’s unique lightweight flywheels use a one piece full chromoly design for incredible strength and reduced weight. Each JUN lightweight flywheel is specially engineered, and the weight of each flywheel has been calculated according to the engine characteristic and vehicle to provide the greatest balance of performance for the street/sports use car. The JUN lightweight flywheel has reduced mass, and provides an excellent compromise of throttle and acceleration response, while retaining low end torque. Full chromoly steel construction is forged from one single piece of material, offering incredible strength, and are extremely well balanced for even mass distribution, which is not available in most other flywheels. The reduced mass improves throttle response, acceleration, and helps recover power lost from drivetrain losses associated with the higher rotating mass of heavy factory flywheels.