RAPFIX Racing
Attention! -Before purchase-
This product is exclusively for competition cars. Please note the following items.
・It is not "vehicle inspection correspondence".
・MOMO and NARDI horn buttons cannot be attached.
- It cannot be directly mounted on a normal-sized PCD (MOMO=70mm, NARDI=74mm). You will need a 3-6 hole conversion adapter sold separately.
・It cannot be attached directly to the standard boss or short boss. Please contact us for details.
・For other product characteristics, shapes, and mounting holes, please refer to the "Instruction Manual" and "Product Schematic Diagram" for details, and consider the mounting method before purchasing.
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RAPFIX Racing Welding Type
35,200 yen (32,000 yen, excluding tax)
Usage: Dedicated testing for competition bikes
Steering wheel used: Competition (PCD50.8mm 3 holes, M5P0.8)
Vehicle mounting method: Welding (pipe diameter outer diameter φ19.0 or inner diameter φ25.2)
Main structural materials:
Plug = Chromium-molybutene steel SCM435
Socket = Aluminum alloy A7075T6
Sleeve = Aluminum alloy + stainless steel SUS420
Ball = Steel SUJ2
Dimensions: Total length approximately 90mm
Weight: 350.8g
RAPFIX Racing Welding Type Product Overview Diagram
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RAPFIX Racing Bolt Type
38,500 yen (35,000 yen excluding tax)
Intended use: For competition bikes only
Steering wheel used: Competition (PCD50.8mm 3 holes, M5P0.8)
Vehicle mounting method: 3-hole bolt mounting (PCD 50.8mm, 3-hole φ5.2)
Main structural materials:
Plug = Chromium-molybutene steel SCM435
Socket = Aluminum alloy A7075T6
Sleeve = Aluminum alloy + stainless steel SUS420
Ball = Steel SUJ2
Dimensions: Total length approx. 75mm
Weight: 348.4g
RAPFIX Racing Bolt Type Product Overview Diagram
Notes on product color (anodizing)
Since this product is an aluminum product, it is anodized (anodized) to improve corrosion resistance and wear resistance.
Anodized aluminum has the characteristic of being difficult to reproduce a uniform state in terms of color and luster, so the color and luster change depending on the production lot.
In addition, during the construction of anodized aluminum, color loss occurs in the part that is in contact with the jig, but since it is an unavoidable event in the process, we cannot respond to complaints, returns, or exchanges related to these color views, etc. Please note.
Genuine Adoption in Aston Martin's Vulcan
The video starts playing at [1:55].
Officially adopted in the Aston Martin Valkyrie
The video starts playing at [4:06].
The SFI Foundation (SFI) is a non-profit organization established to issue and manage standards for professional performance and quality assurance of racing equipment. Since 1978, the SFI Foundation has contributed to the automotive aftermarket and motorsports industry. Service to the industry is a system that develops and manages various standards, certifications, and testing criteria for use in motorsports.
Developed as the ideal form of a competition quick-release hub. The Rafix series has already sold over 20,000 units as detachable hubs for commercial sports steering wheels, establishing its position as "Quick Release = Rafic" with its unique ball lock system. Based on this technology, it has achieved compactness and weight reduction exclusively for competition vehicles.
Pulling the sleeve frees the steel ball in the socket and releases the socket from the plug. The pulled sleeve is held in place and does not need to be pulled again for insertion. The major advantage is that it can be inserted at any angle and automatically joins with the steering wheel (socket) when the angle of the steering wheel (socket) and the steering shaft (plug) are aligned, eliminating the annoyance of the pre-RAPFIX quick release where the shaft cannot be inserted unless the TOP is precisely aligned. The steel ball has been greatly reduced. The unique technology also eliminates rattling and ensures secure steering force transmission because the steel ball always maintains pressure on the plug. This rattle-free and smooth connection is effective even after a certain amount of wear and tear on the product, which greatly contributes to the driver's severe steering wheel operation. Furthermore, RAPFIX Racing uses a new "Cam Lock" mechanism to ensure that the plug and socket are fully bonded and that radial loads are locked in place for absolute reliability on the racetrack. Together with the ball lock, this ensures safety.
Developed with the premise of use in competition vehicles. To allow easy welding to the steering shaft, the plug uses SCM435 chromolite-molybutene steel, and the sleeve uses SUS420 liner inside to achieve lightweight and high strength. The socket is made of ultra-duralumin and enhanced durability with special plating. A protective cap made of Dellin resin is attached to the plug tip, anticipating heavy use. Even if inserted carelessly, the plug tip is less likely to damage the socket, and if the protective cap is damaged, it can be easily replaced. A new bolt type has been added that can be fixed to the steering shaft with bolts (PCD 50.8mm 3 holes).
We conduct tests defined by the NAPAC standards (*1), which are Japan's aftermarket product standards.
As a result of these tests, both the bending and torsion tests showed slight permanent deformation and increased rattle under the specified load, but they remained detachable and did not break, and even under heavy loads, steering would not become impossible. Furthermore, tests were conducted to determine how much load would be required to release the coupled plug and socket under strong tensile force. Even at 3754 kg (3.67 KN), the device did not break, and the fastening screw with the steering wheel broke first, concluding the test. It was confirmed that the quick-release function could continue to operate even after it had ended. Since the standard operator weight according to Japanese Industrial Standards is 55 kg, the device must withstand approximately 68G of impact in the tensile direction.
In terms of durability, even after 10,000 internal tests of putting on and removing parts, it was confirmed that although the rattle increased, steering and attaching and detaching operations were possible, and it did not break.
(*1) For the transmission of steering force and radial force by steering wheel steering, torsional tests showed no failure under a static load of 29.7 kg·m (291 N·m), and under bending loads where the driver's weight acts on the top position of the steering wheel, no failure was achieved under static weight of 19.8 kg·m (194 N·m) in the bending test.
For RAPFIX Racing/GTC-R
3-hole to 6-hole conversion adapter (set of 2)
6,600 yen (6,000 yen excluding tax)
This adapter converts the 3-hole of Rafix Racing into a 6-hole MOMO/NARDI type.
Thickness: approximately 5 mm per piece
Outer diameter: approximately 83mm
RAPFIX Racing/GTC-R 3-Lug to 6-Lug Conversion Adapter Product Overview
RAPFIX Racing Welding Type Dedicated Electrode Kit
52,800 yen (48,000 yen excluding tax)
You can add 12 electrodes to the RAPFIX Racing welded type. The terminal section can also be attached and detached simultaneously with the steering wheel.
RAPFIX Racing Welding Type Dedicated Electrode Kit Installation Sketch
Rafix Racing Welding Type
Rafix Racing Bolt Type
Rafix Racing Electrode Kit
