Experience the legendary performance of the iconic Hewland LG500/LG600 MK1 with this premium reproduction transaxle from Retno. Faithfully engineered to match the original Hewland design, this complete 5-speed transmission is assembled entirely from brand-new components and built to the highest standards for vintage racing, restorations, and historic motorsport applications.

Every major component has been reproduced to be fully interchangeable with original Hewland LG500/LG600 MK1 parts, making this transmission an excellent choice for replacing worn gearboxes or completing an authentic restoration.

Retno has also incorporated several improvements to the original design, including enhanced casting quality and superior surface finishes, while maintaining complete compatibility with original Hewland components.

The main case, bearing carrier, finger housing, rear cover, and side plates are precision sand cast from 356-T6 aluminum and finished with a durable black anodized coating for improved corrosion resistance and an authentic race-inspired appearance.

Unlike rebuilt or used gearboxes, every component in this transmission is brand new—including the gears, bearings, differential, studs, fasteners, washers, seals, and internal hardware—providing exceptional reliability and peace of mind.

The transmission is equipped with a limited-slip differential (LSD) featuring 45°/45° ramp angles, delivering predictable power transfer and excellent traction for both historic racing and high-performance applications.

Designed for legendary race cars including McLaren Can-Am, Lola, GT40, and many other vintage sports racing and prototype vehicles, this transmission offers the classic Hewland performance enthusiasts expect.

Features

• Complete reproduction of the Hewland LG500/LG600 MK1 5-speed transaxle
• Fully assembled and ready for installation
• All components are brand new—no rebuilt or reused parts
• Fully interchangeable with original Hewland LG500/LG600 MK1 components
• Precision sand cast 356-T6 aluminum housings
• Durable black anodized finish
• Improved casting quality and surface finish over the original design
• Limited-slip differential with 45°/45° ramp configuration
• Accepts both U-joint and CV axle flanges
• Ideal for vintage racing, restorations, and historic competition vehicles

Gear Ratios

Ring & Pinion: 10:33

Specifications

• Transmission Type: Hewland LG500/LG600 MK1 Reproduction
• Speeds: 5-Speed Manual
• Housing Material: Sand Cast 356-T6 Aluminum
• Finish: Black Anodized
• Differential: Limited Slip (LSD)
• LSD Ramp Angles: 45° / 45°
• Axle Flanges: Compatible with U-Joints or CV Joints
• Condition: Brand New

Applications

Suitable for a wide variety of historic and vintage race cars, including:

• McLaren Can-Am
• Lola
• Ford GT40
• Historic Sports Racers
• Vintage Prototype Race Cars
• Custom Competition Vehicles utilizing the Hewland LG500/LG600 MK1 transaxle

What's Included

• Complete assembled Hewland LG500/LG600 MK1 5-speed transaxle
• Limited-slip differential installed
• Brand-new internal gears, bearings, seals, hardware, and components

Built with authentic engineering, modern manufacturing techniques, and uncompromising attention to detail, the Retno Hewland LG500/LG600 MK1 Reproduction Transaxle delivers the reliability, performance, and originality demanded by today's vintage racing enthusiasts and professional restorers.

MADE IN THE U.S.A

Custom builds and alterations are available in our SOS (Specialty Order Shop)!