DEVELOPMENT

Wide Front Fenders for BMW F82 M4: Improved Cornering Force These front fenders were developed to improve cornering force. Based on the characteristics of the BMW F82 M4, the ASSIST F-M4 had already verified that cornering force is enhanced when all tires are the same size.While the ASSIST F-M4 project achieved uniform tire sizes through fender modification, we have now commercialized a wide fender that offers both weight reduction and improved cooling.The design retains the stock lines while incorporating a street-sport aesthetic. The increased volume from the wider fenders and the cooling ducts create an aggressive style. With the minimum necessary widening and slim ducts, the design has been meticulously crafted down to the finest details to ensure a balanced look—whether installed as a standalone fender kit or added to a vehicle already equipped with an aero kit. The stock BMW side markers are reused. These fenders can be installed on vehicles equipped with LAPTORR side spoilers without any modification.　Reference values for fender width: These wide fenders are designed to accommodate BBS RI-A 18" 11.0J and RAYS TE37SAGA 18" 11.0J wheels with YOKOHAMA ADVAN A052 295/35-18 tires on the front.For the suspension, an INTRAX adjustable suspension system with camber/caster-adjustable front upper mounts is required, with camber values set to approximately -2.5 to -3.0°.　They also feature improved cooling. The ducts around the side markers have been extended to the side steps, and slits have been added to the top surface of the fenders. The master model is made of dry carbon using the prepreg process and weighs 810g. The lineup is planned to include two types: dry carbon and dry FRP. Prices will be announced at a later date.    

Performance!　　Due to the characteristics of the B58 engine, while torque is extremely high up to about 2,000–4,000 rpm, it tends to drop significantly as the engine revs increase, primarily due to the turbocharger’s capacity. As a performance muffler, the LAPTORR exhaust is designed to promote turbine rotation through low friction, delivering excellent performance in the high-rpm range. It also features careful control of exhaust pressure, so you won’t notice any loss of torque in the low- to mid-rpm range.　Sound Quality is a Priority! In Sport+ Mode, the clear and pleasant exhaust note at high RPMs has a truly race-inspired feel! In Comfort Mode, its simple design effectively suppresses “muffled” sounds. Volume! In Sport+ Mode, the volume is tuned to deliver the optimal sporty sound and tone from the driver’s seat when the throttle is fully open.Since the Supra’s cabin is highly sound-insulated, the volume may seem a bit loud when heard from outside. With exhaust bubbling sounds from systems like the bootmod3, the volume is more than sufficient, so you have a wide range of adjustment options, making it easy to tailor the volume and sound quality to your preference. In Comfort Mode, when driving at a constant speed without accelerating, the volume inside the cabin is low enough to allow for comfortable conversation, thanks to the characteristics of the B58 engine.　　Prototype (the piping configuration differs slightly from this product)　

LAPTORR Front Spoiler / Complete Set for G80/82-M3/M4: We have completed a front spoiler that offers excellent front aerodynamics. Designed in collaboration with “Dongmu” with a focus on aerodynamics and functionality, this carbon fiber product was manufactured using the infusion process at a LAPTORR partner factory.The kit consists of four spoilers, allowing you to choose the combination that best suits your needs. The Base Spoiler increases downforce by extending further forward while maintaining the balance of the stock design. The ends are shaped to reduce drag on the tires, while the central section is designed for cooling and rear airflow management. It can be installed on its own. There are two types of Base Spoilers: Base 1 lacks mounting holes for the extension on the underside of the spoiler tip, while Base 2 includes them.Base 1: We offer Base 1 for those who do not plan to install the extension and are concerned about the appearance of the mounting holes on the underside of the spoiler tip. Please note that you cannot add the extension to this model. Base 2: Base 2 features mounting holes on the lower front section for connecting to the extension spoiler. Therefore, if installed on its own, these mounting holes may be visible. We recommend the highly versatile Base 2 for those who do not mind the appearance even without the extension.　 　　Extension Spoiler: The Extension Spoiler extends the forward projection of the Base Spoiler even further, maximizing the surface area to generate downforce. It connects flush with the under spoiler to enhance downforce. The shape of the central tip minimizes fluctuations in downforce caused by changes in the vehicle’s posture and also contributes to the cooling of the engine oil cooler, transmission, and differential.The base spoiler is required for installation of the extension spoiler. 　　　Side Spoilers: Airflow from the grilles at both ends of the bumper is directed by the side spoilers to pass along the outer side of the tires, cooling the wheel wells and promoting a smooth airflow toward the rear. This is effective when wide tires extend beyond the bumper. They can be installed independently.　　　Under Spoiler: This serves as the main component for generating downforce.It is designed with the widest possible surface area to generate significant downforce. Consequently, the carbon fiber thickness has been increased to ensure the strength required to withstand this downforce. Its shape allows for smooth airflow from the engine oil cooler, contributing to cooling efficiency. The under spoiler cannot be installed on its own. Both the base and extension spoilers are required.　　　Coloring Examples Go to Pricing/Purchase Page　

We created a prototype using FRP to check the fit and functionality. While the main body of the final product is planned to be made of carbon fiber using the infusion process, we are also considering FRP for the base and sides of the front spoiler. After actually installing it and testing various maintenance procedures, we decided to make adjustments to the mounting method to improve workability for mechanics. Since the number of mounting points will increase to ensure strength, we are devising ways to simplify the process as much as possible.Now that the testing is complete, we will temporarily remove the aero parts, paint them, and reinstall them on the body. Although the materials differ since this is a prototype, the shape is identical to the final product, so you can get a clear idea of what it will look like. We will be exhibiting it at ASSIST Kyoto next weekend.　　　Regarding the images: The images show the base, extension, under, and side components all installed. For everyday use, we recommend installing only the base and side components. The front-tip extension and under components are designed for motorsports applications that require downforce.

Now that the design has largely been finalized, we’re releasing the design renderings. We’re developing these four products—the front spoiler, front extension spoiler, front under spoiler, and side spoilers—to maximize aerodynamic performance individually. They’re designed as separate components so you can choose the right one for your specific needs.Recommendation 1: For a simple style upgrade, choose the front spoiler. Recommendation 2: For a street-oriented style upgrade, choose the front spoiler and side spoiler set. Recommendation 3: For a more aggressive style upgrade, add the extension spoiler to the front and side spoilers. Recommendation 4: For motorsports use requiring significant downforce, choose the full kit, which includes the under spoiler. This provides tremendous downforce.Recommendation 5: The side spoiler can be installed on its own to more efficiently channel airflow through the side ducts of the stock front bumper, enhancing the aerodynamic effect in the wheel wells. It is also effective at reducing drag caused by wide tires protruding beyond the bumper. We are currently working on creating the master model and are on track to release it within this year. Full Kit / Image | Underspoiler / Image

We are releasing a set of front fenders that have been custom-widened specifically for the ASSIST F-M4. Once the product is complete, it will allow for the installation of a combination of 18-inch 11.0J wheels and 295/35-18 tires on the front, and since a four-wheel setup will also be possible, this will significantly contribute to the efficient use of tires.　Installation Example: RAYS TE37 SAGA 18" 11.0J ET37 (ASSIST Original Size) YOKOHAMA ADVAN A052 295/35R-18