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Description

Manthey Racing Forged Lightweight Wheel Set for 981 Porsche Cayman GT4

Manthey Racing, working closely with engineers at the Porsche Development Centre in Weissach, has developed a technologically advanced forged wheel that integrates seamlessly with the Cayman GT4’s dynamic design and meets Manthey’s stringent performance targets. By reducing unsprung and rotating mass by up to 11.8kg per vehicle set, the wheels sharpen spring – damper response and further enhance vehicle controllability. Dimensions match the OEM Porsche specification for a guaranteed fit — 20×8.5 +61 front and 20×11 +50 rear. Manufactured to Porsche-equivalent quality standards, Manthey’s lightweight wheel sets preserve eligibility for the Porsche Approved Warranty.

Production of Lightweight Wheels

Since July 2023, Manthey Racing has operated its own wheel production facility to manufacture lightweight wheels in-house. Insourcing allows Manthey to respond quickly to customer needs and ensure uncompromising quality from development through final inspection. In close collaboration with engineers at Porsche’s Weissach Development Centre, Manthey produces technologically advanced forged wheels that meet its exacting performance standards.

Features

Forged lightweight construction
Up to 11.8kg per set reduction in unsprung and rotational mass
Sharper spring–damper response and improved steering precision / vehicle controllability
Direct-fit OEM sizing and offsets for a guaranteed fit
Manufactured in Manthey Racing’s own wheel facility
Built to Porsche-equivalent quality standards
Preserves Porsche Approved Warranty eligibility
Technologically sophisticated design
Comprehensive QC from development through final inspection for consistency and durability
Track-proven development and vehicle validation to ensure real-world performance
3 different finishes:
- Brilliant Silver
- Neodyme
- Satin Gloss Black
Sold as a wheel set (4 wheels)

Specifications

Front Axle:
- Diameter: 20in
- Width: 8.5in
- Offset: +61mm
- Center Bore: 71.6mm
Rear Axle:
- Diameter: 20in
- Width: 11in
- Offset: +50mm
- Center Bore: 71.6mm

Applications

Porsche Cayman GT4: 981 (2015-2016)

Notes

Ships directly from the EU; import duties and tariffs may be due upon delivery
Sold without tires, air valves, or TPMS
Sold as a wheel set – 4 wheels

About Manthey Racing

Manthey Racing is a German motorsport and performance-engineering company headquartered in Meuspath at the Nürburgring and renowned for its deep, long-standing partnership with Porsche. Founded by Olaf Manthey, the company has earned international success in endurance racing while translating race-proven expertise into road-car upgrades through Manthey-branded performance packages and components — covering aerodynamics, suspension, braking, cooling, and forged lightweight wheels. With in-house development, simulation, manufacturing, and rigorous quality control from prototype to final inspection, Manthey delivers OEM-level fit, finish, and reliability, supporting private clients and factory programs alike and advancing the shared goal of faster laps with uncompromised drivability.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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