ARP Flywheel Bolt Kit

2013–2016 Scion FR-S; 2017–2020 Toyota 86; 2013–2020 Subaru BRZ 4U-GSE Engine

203-2804

Overview:

The ARP Flywheel Bolt Kit is a precision-engineered upgrade designed specifically for the 4U-GSE engine found in the 2013–2016 Scion FR-S, 2017–2020 Toyota 86, and 2013–2020 Subaru BRZ models equipped with manual transmissions. This kit provides a reliable and durable fastening solution for flywheels or flexplates, ensuring optimal drivetrain performance and safety under demanding conditions. Ideal for enthusiasts and professionals seeking enhanced strength and longevity beyond the original equipment manufacturer (OEM) specifications, these bolts help maintain the integrity of your driveline assembly during spirited driving or track use.

Key Features:

Engineered for superior strength and reliability, the ARP Flywheel Bolt Kit offers the following key benefits:

• Manufactured from premium grade 8740 chromoly steel with a tensile strength of 200,000 psi
• Cold forged to maintain molecular integrity and resist fatigue
• Heat treated before thread rolling and machining for maximum durability
• Includes a 1/2 oz. tube of ARP Ultra-Torque fastener assembly lubricant for consistent clamping force
• Designed to exceed OEM bolt strength and provide enhanced reliability under high-stress conditions
• Compatible with manual transmission flywheels and flexplates on 4U-GSE engine applications
• Direct fitment with no modifications required
• Corrosion-resistant finish for long-lasting performance

Construction & Design:

ARP’s flywheel bolts are crafted from high-quality 8740 chromoly steel, known for its exceptional tensile strength and toughness. The cold forging process preserves the internal grain structure, resulting in bolts that resist stretching and fatigue better than standard fasteners. Each bolt undergoes precise heat treatment prior to thread rolling and machining, ensuring uniform hardness and strength throughout. This meticulous manufacturing process guarantees that the bolts maintain clamping force and resist loosening under extreme engine loads and vibrations.

Installation & Fitment:

The ARP Flywheel Bolt Kit is designed for direct replacement of the factory flywheel or flexplate bolts on manual transmission-equipped vehicles with the 4U-GSE engine. Installation is straightforward and requires no modifications to the flywheel or crankshaft. The included Ultra-Torque lubricant ensures proper torque readings and consistent bolt stretch, which is critical for maintaining secure fastening. It is recommended to follow the vehicle manufacturer’s torque specifications during installation to achieve optimal results.

What's Included:

• Set of ARP flywheel/flexplate bolts tailored for 4U-GSE engine applications
• 1/2 oz. tube of ARP Ultra-Torque fastener assembly lubricant
• Installation instructions and torque guidelines

Ideal For:

This bolt kit is ideal for automotive enthusiasts, tuners, and professional mechanics who demand enhanced durability and reliability from their driveline components. Whether upgrading for track use, performance driving, or routine maintenance, these ARP bolts provide peace of mind by significantly reducing the risk of bolt failure or loosening compared to OEM hardware. They are especially recommended for vehicles undergoing increased power output or frequent high-RPM operation.

ARP (Automotive Racing Products) is the gold standard for high-strength fasteners used in performance engines and drivetrains. Trusted across motorsports, ARP’s studs, bolts, and hardware kits are engineered for extreme clamping loads and repeatable installation—helping builders improve reliability when cylinder pressures, RPM, and heat are turned up.