The BimmerWorld View.The S65 V8 is one of our favorite BMW engines of all time. But while the high-revving V8 pulls all the way to a lofty redline, its small size can't match the torque from larger displacement V8s. And that low-down torque is missed, especially on the street. Our Stage VI kit does the most with the 4.0-liter S65 V8 - Harrop Eaton supercharger, big headers, less restrictive exhaust, and software tuning. The finished product adds the torque you're missing in a package so clean that it looks like a BMW-designed upgrade.
Harrop E9X M3 Supercharger Kit
Positive displacement superchargers offer greater advantages for a V8 than the more familiar centrifugal units used on past BMW engines. However, the challenges associated with positive displacement designs meant long and expensive development. Now thanks to Harrop Engineering, a 60-year veteran of the automotive performance industry from Down Under, the difficult-to-impossible packaging hurdle has been overcome! And they haven't just "made it work" - Harrop leveraged their work on OE Ford and Lotus supercharger kits to give the TVS Supercharger Kit true OE appearance and fitment - BMW would be hard-pressed to do better! Harrop utilizes the Eaton TVS 1740 supercharger which produces quick response and monstrous acceleration, yet maintains completely civil driveability. While other systems on the market have trouble developing a plenum that delivers the proper cylinder fill on BMW's S65 V8 due to the difficult layout process, Harrop's plenum design highlights their masterful work, ensuring equal amounts of air to every cylinder. Harrop's electronic bypass valve is a world's first electronic boost control for an aftermarket positive displacement supercharger kit, and it assures perfect and proper boost is always on tap.
World's first positive displacement supercharger for S65 engine
World's first front inlet drive Eaton TVS 1740 supercharger
Latest intercooler system technology
Exclusive plenum design for proper cylinder fill
Unique bypass actuation control
OE appearance and operation
Software tuning included
BimmerWorld E9X M3 Headers
Unlike older car models, BMW equipped the E9X M3 cars with good headers from the factory. It took absolutely every racing trick up our sleeves to gain power, but our new BimmerWorld Longtube headers produce proven results and are guaranteed to surpass expectations. Beyond putting out big power from stock engines (and even more from stroker and supercharged applications), our true equal-length headers change the shape of the exhaust sound, eliminating some of the muddiness of mismatched exhaust pulses for an intoxicating, crisp, and harmonious note.
Tri-Y Design - Cylinders are paired properly to assist in exhaust scavenging to maximize low-end torque and the area under the curve with no loss in high-end horsepower.
Stepped Primary Tubes - Primaries step from 1-5/8" to 1-3/4". The smaller diameter boosts low-end torque while the step to the larger diameter in the primary frees the exhaust gasses for higher RPM flow.
Merge Collector - 2" secondary pipes flow into a merge collector with a 2.5" venturi and 3" tailring to promote scavenging.
Precision Production Fixture - Production fixtures are laser cut and exceedingly robust, with contact points every few inches to ensure the part you receive fits perfectly as designed.
Laser-Cut Flanges - Flanges are precision cut from thick 3/8" 304 stainless stock to retain shape, with voids for weight reduction.
Mandrel-Bent Tubing - One-piece tubes are solid-formed instead of pieced together for smoother exhaust gas flow and long-term durability.
Band-clamp attachment maximizes underbody clearance and makes exhaust removal and installation quick and easy.
Full 304 Stainless Steel construction for heat retention, durability, and corrosion resistance.
Full lifetime warranty against defects in materials and craftsmanship.
Fits all left-hand drive E9X M3 cars - does not fit RHD models.
Made in USA
BimmerWorld E9X M3 Center X-Pipe
Our BimmerWorld E9X M3 X-Pipe is designed to perfectly complement our Longtube Tri-Y Headers - this piece does not bolt onto stock headers. We've duplicated the architecture and design that we developed on our E92 M3 race car to maximize both flow and scavenging effect. The X crossover component is the same as the piece we race with, positioned for optimized power output and tucked tight to the chassis to maximize ground clearance. The 3" inlet and main pipes keep the hottest exhaust gasses flowing while the step to 2.5" toward the back retains velocity as the exhaust cools.
The GREEN cats used in our catted X-Pipe option are a true premium-quality 300-cell catalytic converter made in North America, meeting EPA federal emissions standards. In back-to-back dyno testing, our catted X-Pipe lost only 7 Hp versus the straight pipe - a fantastic result considering that removing stock catalytic converters on this car typically gains close to 25 Hp. This system, complete with Catted X-Pipe and Longtube Tri-Y Headers, makes more power than any header-back system we've tested - full race, catless, and resonator-free systems included!
Magnaflow E9X M3 Cat-Back Exhaust
Our package includes a MagnaFlow cat-back exhaust that produces a subtle throaty sound that enhances the V8 exhaust note without getting in the way. It's a fully stainless performance exhaust with dyno-developed power gains and an engineered system that minimizes drone. We wanted you to have all of the power but without the drama.
MagnaFlow M3 Exhaust Features:
3.5" polished double-wall tips
superior fit and finish
power but civilized sound
weight savings over stock
Made in the USA
Default system is E92 M3 coupe. E90 sedan systems also available.
BimmerWorld S65 Treated Rod Bearing Kit
Our S65 Treated Rod Bearing Upgrade Kit is the ultimate solution for the E9X M3's high-revving S65 V8 engine. These high-tech, race-bred engines have a rod bearing problem from the factory, much like its predecessor's S54 engine. We've seen multiple engines throw rods, and replacement after the fact will cost you over $15,000. Our kit, consisting of treated rod bearings and race-quality ARP hardware, addresses this issue and is highly recommended for cars that are driven on track, or those with increased power output (supercharged, stroked, etc).
Our treated rod bearings are not coated; coatings tend to add too much material and interfere with proper tolerances, causing more problems than they solve. The bearings we use in our kits have been treated with a process that not only makes the grain structure in the surface of the bearing smoother, but also aids in oil retention, providing more lubricity in this critical area of the S65 engine.
ARP Pro Series connecting rod bolts and OEM oil pan gasket included.
NOTE: To protect your engine and prevent failures with or without our kit, we highly recommend a premium-quality oil, such as Red Line with a higher zinc content. Correct oil operating temperature is 220°F+. Always let your car warm up properly before subjecting the engine to higher throttle angles and RPMs.