TRQ Front Lower Forward and Rearward Control Arm Set - Direct Fit

In this review the TRQ Front Lower Forward and Rearward Control Arm with Ball Joint Set is examined for owners of select BMW X3 and X4 models who need a complete front lower arm replacement. The kit's single biggest selling point is that it provides a full 4 piece direct-fit replacement with pre-assembled ball joints and multiple reference numbers, saving time on diagnosis and parts sourcing for 2011-17 BMW X3 and 2015-18 BMW X4 applications. It is best suited to DIY installers and independent shops looking for an economical, ready-to-install suspension solution.

Key Features

• Complete 4-piece kit: Includes two front lower forward control arms and two front lower rearward control arms with ball joints so both sides are serviced at once for balanced handling.
• Direct-fit replacements: Pre-assembled components are designed to match original geometry and reduce installation time without the need for modifications.
• Wide compatibility: Covers 2011-2017 BMW X3 and 2015-2018 BMW X4 front lower forward and rearward positions, simplifying parts selection for those model years.
• Multiple reference numbers: Supplied with many cross-reference numbers to help confirm fitment against factory or aftermarket catalogs.
• Time-saving installation: Pre-mounted ball joints and ready-to-install arms let a competent mechanic or experienced DIYer complete the job faster than assembling separate components.

Who It's For

The kit is ideal for BMW X3 and X4 owners from the 2011-2017 and 2015-2018 model years respectively who need to replace worn or damaged front lower control arms and prefer a single matched set for both sides. It also suits independent mechanics and home mechanics who want pre-assembled, direct-fit parts that minimize shop time.

It may not be the best choice for owners focused on OEM-branded parts or long-term corrosion resistance beyond typical replacement expectations; buyers with advanced performance or heavy-duty off-road needs should consider heavy-duty or upgraded suspension components instead.

Pros & Cons

Pros

• Complete matched 4-piece set lets buyers replace both forward and rearward lower arms in one service.
• Pre-assembled ball joints and direct-fit design reduce installation time and alignment guesswork.
• Clear compatibility for the listed BMW model years and many reference numbers ease part confirmation.
• Generally reported as offering good value for money compared with ordering individual components.

Cons

• Some customers report mixed longevity from the ball joints, so expect varying lifespan across vehicles.
• There are occasional concerns about rust resistance and rubber joint wear in harsher climates.

Specifications

Kit Contents	4 Piece control arm set (2 forward, 2 rearward with ball joints)
Compatible Models	2011-2017 BMW X3; 2015-2018 BMW X4
Includes Ball Joints	Yes, pre-assembled on rearward arms
Reference Numbers	Multiple cross-references provided (e.g., 31106787673, 31126787669, 102-7748)
Quantity	4 pieces
Installation	Direct-fit, no modifications required

Our Verdict

The TRQ 4-piece front lower control arm set is a practical, cost-conscious option for owners of the specified BMW X3 and X4 model years who need a fast, matched replacement. It delivers solid fit and functionality with pre-assembled ball joints to cut installation time, offering good value for routine suspension service, though buyers should be aware of mixed reports on ball joint longevity and corrosion in aggressive environments.

Frequently Asked Questions

Does this kit fit both sides of the vehicle?
Yes, the kit includes forward and rearward left and right front lower control arms so both sides are covered.

Are the ball joints pre-installed?
Yes, the rearward control arms are supplied with ball joints pre-assembled for quicker installation.

How can I confirm this fits my car?
Use the vehicle fitment or parts reference numbers to cross-check your model year and chassis before purchase.