MFP Rack & Pinion Bushings - US $50 (IN STOCK)
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(IN STOCK ) Red:

(IN STOCK ) Black:

Replacement polyurethane steering rack bushings. A direct-fit replacement bushing.
Made In The USA

MFP FRONT Spring Seats - US $20 (OUT OF STOCK)
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(OUT OF STOCK) Red -

(OUT OF STOCK) Black -

Replacement polyurethane front spring seats. Two upper seats are included in each set.
Made In The USA

MFP REAR Spring Seats - US $75
(IN STOCK)
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(IN STOCK) Red -

(OUT OF STOCK) Black -

Replacement rear polyurethane spring seats. This set includes two upper and two lower seats for direct-fit replacement. Replacing your old, cracked or worn out stock rear spring seats can sometimes restore rear ride height and camber to stock.
Please see MFP Site for more specific information.
Made In The USA

Ball Joint Dust Boots - US $25
(RED IN STOCK)
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(IN STOCK ) Red:

(OUT OF STOCK) Black:

Replacement polyurethane ball joint dust boots. These boots protect both your lower balljoints and outer tie-rod balljoints from damage due to debris contamination from failed rubber boots.
Made In The USA

Differential Mount V2 - US $160
(OUT OF STOCK)
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(OUT OF STOCK)

High-performance direct-fit replacement differential mount. This unit will greatly reduce the independent movement of the entire rear suspension in the car to promote a much more solid and predictable feeling rear end during street driving, road-racing or drag-racing.

• Installation can be completed in as little as 1 hour in your Z31.
• Will not encourage differential case egging around the pinion shaft like solid mounts.
• Far less interior gear noise compared to solid mounts.
• Less expensive than new OEM diff mount.
• Re-uses existing fastener and includes complete instructions.
• Must be used along with poly Rear Crossmember IRS Bushings.
• Made In The USA
  
  Note for all customers who purchased our V1 Differential Mount and wish to upgrade to the V2 Differential Mount: I am offering an upgraded steel angle bracket to improve the V1 mount at no cost. You can also opt for an upgrade kit (sold at cost) which converts the V1 mount to the V2 mount design. Please click here to fill out a simple form.

Rear Crossmember (IRS) Bushings - US $47
(OUT OF STOCK)
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(OUT OF STOCK )

The perfect part to complement your poly differential mount! I worked hard to get these made several years ago and now they are available at very low cost! These bushings replace the large flexable stock units that commonly wear out and are very expensive to replace. These bushings drastically change the feel and performance of the rear suspension, especially during hard cornering. They are also an inexpensive way to rid your Z31 of the common "rear end thump" on shifts (Note: sometimes this condition can also be caused by a failed differential mount or slop in a driveline part). Sold in pairs, only one pair isneeded per vehicle. Mfd. by Prothane. Made In The USA
Highly recommended for use with our differential mount above.

Prothane "Total Kit" - US $139
Control Arm/Tension Rod/Swaybar Poly Kit
(IN STOCK)
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(84-87 Z31)

(88-89 Z31)

While the "Total Kit" is a bit of a misnomer, this kit includes the front and rear poly control arm bushings, tension rod bushings, swaybar mount bushings and end links. Selecting your appropriate year above only changes which style of tension rod bushings included. When it comes to the control arm bushings, these kits are not always an easy installation. Be prepared for several hours of work (6+) to install the total kit. Mfd. by Prothane. Made In The USA
Please Note: Rear Crossmember IRS bushings and other parts are NOT included but highly recommended! After we Z31 owners pestered Prothane into making this kit, it was released without the rear crossmember bushings (the reason for that still remains unknown). After we again pestered them into it, two years later they released the rear crossmember bushings, but have continued to sell it seperately from the "total kit".

Engine Mounts (Isolators) - US$110
(OUT OF STOCK)
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(Out of Stock) Stainless Hardware :

(Out of Stock) Grade 8 Hardware :

(Out of Stock) Z32 Version Stainless :

(Out of Stock) Z32 Version Grade 8 :

Polyurethane replacement engine isolators are the application engineered and direct-fit addition to your modified Z31, and a cost-effective stock replacement part on your daily driven car! The urethane resin, durometers and hardware components have been selected to give both long lifespan and high performance. As always, all kits include an instruction packet to assist with installation.

• More comfortable, far less vibration, noise and harshness transmitted into the cabin compared to using solid mounts. These units will also not cause bolts in your engine bay to loosen over time like solid mounts can.
• Stainless steel grade 18.8 hardware or grade 8 (stronger, your choice) and highest grade poly resin – built for a long lifespan.
• Much better clearance at turbocharger inlet for running custom piping.
• Fits all VG30E and ET powered Z31’s. Also available in a version that fits Z32’s and 200SX’s
• Promote faster response and more instantanious torque to the wheels.
• More durable than stock units; will not “tear” at high stress levels like stock isolators are notorious for.
• Installation can be completed in as little as 1 hour in your Z31.
• SCCA Street Prepared class and other racing class LEGAL! Solid mounts are not!
• Made In The USA