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Chassis Components› Bushings and Mounts

Hasport

Rear Engine Mount

$188.89 $169.95 Save $18.94

SKU: FG4RR

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Hasport FG4RR is a rear engine mount designed for the 2012-2015 Honda Civic Si. It controls engine movement, sharpens throttle response, and maintains proper geometry for the drivetrain. The mount is constructed from 6061-T6 billet aluminum and is available in multiple urethane durometer options to suit different driving needs.
Show original supplier description
The Hasport FG4RR rear engine mount is engineered for the 2012-2015 Honda Civic Si (Coupe/Sedan) to significantly reduce engine movement, which can cause issues like wheel hop, lazy shift engagement, and drivetrain slop. By controlling engine rotation, this mount helps maintain consistent axle angles, exhaust clearance, and shifter linkage geometry, leading to a more planted, responsive, and predictable driving experience. Constructed from lightweight, CNC-machined 6061-T6 billet aluminum, the FG4RR mount is built for durability and consistent performance under load. It is available in four urethane bushing stiffness options: U62A (Street) for daily driving with minimal NVH increase, U70A (Track) for spirited driving and occasional track days, U88A (Race) for aggressive street use and heavy track days with noticeable vibration, and U94A (Extreme) for maximum drivetrain control in dedicated track or race applications with significant NVH. This rear engine mount bolts directly into the stock location using factory hardware points, requiring basic hand tools for installation. It is specifically designed for the FG4 Si chassis and will not fit non-Si models. The FG4RR is often the first drivetrain upgrade for 9th gen Civic Si owners, providing a substantial improvement in shift feel, launches, and overall vehicle responsiveness.
Vehicle Symptoms
  • Excessive wheel hop during hard launches
  • Drivetrain clunk when shifting gears
  • Engine rocks noticeably under acceleration
  • Shifter feels vague or imprecise
  • Sluggish engagement from a stop
Relevant Conversations
  • 2012 Civic Si wheel hop fix
  • Hasport FG4RR rear mount review
  • Civic Si drivetrain slop solution
  • How to install Hasport rear engine mount
  • Best rear motor mount for 2015 Civic Si
  • Civic Si engine movement under acceleration
  • Sluggish shifting after mount upgrade
  • Hasport vs Innovative mounts Civic Si
  • What causes wheel hop on Civic Si
  • Civic Si shifter feels loose after hard driving

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandHasport
Part NumberFG4RR
CategoryChassis Components
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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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