Cusco 3F7 540 A Strut Tower Bar Front OS-Type for 2023-2026 Honda Civic Type R F

Vehicle Fitment

• 2023-2026 Honda Civic Type R (FL5, FWD, 2.0L Turbo I4 K20C1, 6MT)
• 2023-2026 Honda Civic (FL5 Non-Type-R, FWD, 1.5L Turbo I4)
• 2024-2026 Acura Integra Type S (DE5, FWD, 2.0L Turbo I4 K20C1, 6MT)

Fitment Notes

• Bar profile is specifically contoured to clear the NACA duct air passage under the FL5 Type R hood - this is the primary design distinction of this part.
• Confirmed by Cusco USA to fit non-Type-R FL5 Civic models and 2024+ Acura Integra Type S (DE5) in addition to the FL5 Type R.
• Installs using existing OEM strut tower mounting points - no drilling or modification required.

Features

• Bridges the two front strut towers to significantly reduce chassis flex and body shake under hard cornering, improving steering precision and suspension consistency.
• NACA Duct Contour Style profile - exclusively shaped to clear the FL5 Type R's NACA duct hood cutout without any clearance issues.
• High-strength steel end brackets paired with a lightweight aluminum oval-section shaft (Type 1 - pressed ribbed) for an optimal balance of rigidity and weight.
• Anodized Cusco blue end plates add a clean, motorsport-inspired look to the engine bay.
• Bolt-on installation using factory strut tower mounting points - estimated install time 0.5 hours.
• Designed and manufactured in Japan from Cusco's circuit-development program on the FL5 platform.

Specifications

• Part Number: 3F7 540 A
• Type: Strut Tower Bar - Front, OS-Type
• Shaft Style: Type 1 (Oval, Pressed/Ribbed)
• Bar Material: Aluminum (Oval Cross-Section)
• Bracket Material: High Strength Steel
• End Plate Finish: Cusco Blue Anodized
• Position: Front
• Chassis Code: FL5 / DE5
• Tightening Torque - Upper Mount: 63 N·m / 46 ft-lbs
• Tightening Torque - Bar to Bracket: 57 N·m / 42 ft-lbs
• Estimated Install Time: 0.5 hours
• Made in Japan

Included Components

• 1x Cusco Front Strut Tower Bar - OS-Type, Aluminum Oval Shaft
• 2x High Strength Steel End Brackets (Cusco Blue)
• 1x Installation Hardware Kit (all required bolts and fasteners)

Product Description

The Cusco 3F7 540 A is a front strut tower bar purpose-built for the Honda Civic Type R (FL5) and its platform siblings. Developed through direct circuit testing on the FL5, it connects the two front strut towers to reduce torsional chassis flex - the flex that causes the suspension to deviate from its intended geometry under hard cornering loads. By stiffening this connection, the bar improves steering feel, front-end response, and overall handling balance on both street and track.

Its standout design feature is the NACA duct-contoured profile, engineered specifically to clear the air passage routed beneath the FL5 Type R hood - a fitment challenge that generic bars cannot address. The aluminum oval-section shaft and high-strength steel brackets keep weight low while delivering meaningful rigidity gains. Finished with Cusco's signature blue end plates and confirmed to also fit non-Type-R FL5 Civics and the 2024+ Acura Integra Type S (DE5), this is a straightforward, high-quality chassis upgrade for any FL5 or DE5 owner looking to sharpen their car's dynamic feel.