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Product Details
| Part Number: | FG4RR |
| Brand: | Hasport |
| Location: | Rear |
Improve drivetrain response and control with the Hasport FG4RR Performance Rear Engine Mount, designed as a performance replacement for the factory rear mount on the 2012–2014 Honda Civic Si. Hasport manufactures the FG4RR specifically to provide increased drivetrain support while allowing customers to select the bushing stiffness that best matches their street or competition application.
Replacing the softer factory mount helps limit excessive engine movement during hard acceleration, deceleration, and shifting. The result is a more connected drivetrain feel and improved power transfer, with reduced drivetrain movement and the potential to reduce wheel hop during aggressive driving.
Constructed from lightweight 6061-T6 billet aluminum and CNC machined for precise fitment, the FG4RR combines strength, durability, and a clean performance appearance.
Features
- Performance rear engine mount for the Honda Civic Si
- Replaces the factory rear motor mount
- Helps reduce excessive engine and transmission movement
- Helps reduce wheel hop under hard acceleration
- Provides a firmer, more direct drivetrain feel
- Can improve the feel of shifting and throttle response
- CNC-machined from 6061-T6 billet aluminum
- Engineered for strength, precise fitment, and durability
- Available in multiple urethane bushing stiffnesses for street through dedicated race applications
- Excellent upgrade for street performance, autocross, drag racing, and road-course builds
- Backed by Hasport's lifetime warranty against defects
Available Bushing Stiffness
- U62A – Street: Best suited for daily-driven and performance street vehicles
- U70A – Race: Firmer option for aggressive street and track-oriented builds
- U88A – Extreme Race: High-stiffness option intended primarily for competition use
- U94A – Most Extreme Race: Hasport's most aggressive urethane option for dedicated race applications
Note: A higher-durometer bushing provides greater resistance to drivetrain movement but also transfers more noise, vibration, and harshness (NVH) into the chassis. For a street-driven Civic Si, the U62A option offers the closest balance between increased drivetrain control and everyday comfort.
Vehicle Fitment
- 2012-2015 Honda Civic Si
- Coupe and Sedan applications*
Specifications:
- Manufacturer: Hasport Performance
- Part Number: FG4RR
- Product Type: Performance Rear Engine Mount
- Material: 6061-T6 Billet Aluminum
- Bushing Options: U62A, U70A, U88A, U94A
- Mount Location: Rear
- Warranty: Hasport Lifetime Warranty against defects
The Hasport FG4RR Rear Engine Mount is an excellent upgrade for Civic Si owners looking to tighten up drivetrain movement and achieve a more responsive, connected feel without replacing the entire engine mount system.
Fitment note:
- Hasport's current product page specifies 2012–2014 Civic Si, while several Hasport retailers list FG4RR for 2012–2015 Civic Si Coupe and Sedan. Verify 2015 fitment before ordering for that model year.
WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. www.P65Warnings.ca.gov.
Vehicle Fitment
| Year | Make | Model | Trim |
|---|---|---|---|
| 2012 | Honda | Civic | Si |
| 2013 | Honda | Civic | Si |
| 2014 | Honda | Civic | Si |
| 2015 | Honda | Civic | Si |
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