E30 Suspension

 

  Korman Complete Suspension Packages

INDY CAR, IMSA GTP, SCCA TransAm, and Formula Car drivers testing or racing with our race suspension systems have often remarked that it "handles like a good formula car". Co-drivers such as John Andretti, Davy Jones, Robbie Buhl, Dorsey Schroeder, and David Hobbes have praised the handling of Korman Suspensions.  In 2004 a customer with our suspension and engine work won 15 consecutive races and the National K Prepared championship!  Join the winners and the record breakers! 

 

 

 

 

 

 

Korman Roadsport Suspension Systems

Our best selling suspension package is comfortable enough for daily use, yet provides substantially improved handling for winding roads and weekend club events. Kit includes:

Model

P/N

318i

3110318H

318iS (M42)

31103M3H

325 i/e

3110325H1

325iC

3110325CH

325iX

3110325XH

Korman Clubsport Suspension System

Still acceptable for street/highway use, this system is for the enthusiast who can accept a firm ride on the street for substantially better handling in club driving events.  The package is designed around Bilstein Sport shocks and includes stronger springs and hard rubber offset lower control arm bushings. P/N  3110325H2

 

Korman Tracksport Suspension Systems

Designed for the driver who intends to win at Club events and autocrosses. This is a fully adjustable racing suspension which is designed for maximum control, not comfort. The hard rubber bushings instead of solid material keep the package quite acceptable for street/highway use. Legal in the prepared and modified classes of the BMW CCA Club Racing Program. Kit includes:

·         Bilstein shocks re-valved to Korman specifications

·         Threaded adjustable front struts

·         Offset hard rubber front upper support bearings

·         Lightweight 60mm diameter front main and tender spring assembly

·         Group N rear springs, extremely progressive

·         Front and rear threaded spring perches

·         Aluminum spring plates

·         Adjustable front and rear sway bars

·         Adjustable sway bar links

·         Rear subframe camber/toe assembly

·         Rear sway bar reinforcements

·         Offset lower control arm bushings-heavy duty hard rubber.

·         Hard rubber subframe and differential mount bushings

All E30 318 &325 P/N 3110325H3

 

Korman Race Suspension Systems

All the components of our Tracksport Suspension System with the following additions:

This system lets you out-handle almost everything else on the track. Neutral controlled drifts under hard throttle, faultless tracking through chicanes and slaloms, forgiving and quick to recover from excesses. Brings out the best in you and your car.   All E30 318i and 325 P/N 3110325H4

 

SCCA ITS Race Suspension System

We developed this system for the first year the E30 325 was eligible in ITS and our first customer got just one second place and won all the rest of his races, set many new lap records, and ran away with the SCCA ITS regional championship.  We have since made some tweaks to the package and it continues to produce winners.

The front struts are shortened and shorter race rated Bilsteins installed.  In front, 60mm race springs in a tender spring set up, mounted over threaded aluminum sleeves , hardened aluminum, adjustable, spherical bearing, upper camber plates.  In the rear, race rated Bilstein shocks, 60mm diameter race springs, aluminum upper spring hats, lower spring seats are threaded for height adjustment.  Delrin offset front control arm bushings, delrin diff mount bushing and solid subframe mounting.  Bolt-in reinforcement for rear sway bar mounts.  All the right parts and winning shock and spring rates.                       P/N 31103M3T

 

Korman Club Racing K Stock Suspension System

Carefully and thoroughly developed, tested and proven components to comply with BMW CCA stock class rules.  Race valved Bilstein shocks, adjustable front and rear anti-sway bars, front upper camber plates, solid delrin lower front control arm bushings, rear sway bar reinforcements, delrin rear trailing arm bushings, delrin differential mount bushing, heavy-duty rear subframe mounts, heavy-duty rear shock mounts, adjustable sway bar links front and rear.  Everything you need to win legally.        P/N  31103M3JS

 

Components in the above suspension systems also available separately

 

Suspension Components

Upper Decamber Plates

A pair of precision machined plates complete with studs and bolts for easy installation. Improves front negative camber by about 1°.  P/N 31062056 (fits all E30's except iX)

 

Adjustable Front Camber Plate Assembly (Road Use)

Hardened aluminum sliding plates with polyurethane insulator bushing.  Designed for road use. P/N 31001873

 

Adjustable Front Camber Plate Assembly-Track/Race Use

Spherical bearing mounted in a sliding housing attached to a T6 aluminum base plate. Provides for full camber adjustability, can also be mounted inboard of current strut mounting holes for even greater camber changes. Designed for track use.   P/N 31001875

 

Rear Subframe Camber/Toe Assembly

Our eccentrics allow adjustment of rear wheel camber and toe in just a matter of minutes. Enables the restoration of factory specified alignment settings, adjustable for racing.  This assembly must be welded into your rear subframe.  Ship it to us and we will send it back within 48 business hours.  P/N 33203567 (camber or toe only, x 2 for both)  

 

Strut Braces

Strengthens chassis, minimizes strut tower deflection. Polished aluminum finish.  Front-P/N 3130103A     Rear-P/N 33220461

 

Competition Adjustable Anti-Sway Bar End Links

Allows for custom tuning of front and rear anti-sway bar preload to suit specific track layouts. Light weight aluminum threaded centers connect right and left hand threaded heim joints for quick adjustments. Front links may be used singly or in pairs, rear links must be installed in pairs.

Front Adjustable Link-P/N 3102847     Rear Adjustable Link-P/N 3102848

 

Rear Anti-Sway Bar Reinforcements

The original rear sway bar to body mounting brackets are notorious for breaking. When they tear out, you're left with more work than just replacing a bracket! Our reinforcement bracket fits into the stock location but has provision for an extra through-trunk mounting bolt. The resulting vertical and horizontal rigidity completely eliminates any future breakage problems. Sold in pairs.  P/N 3133E30RACE

 

Aluminum Lower Control Arms

Stronger than the original steel front control arms and half the weight! 4.5 lb. reduction in unsprung weight per side.     Left P/N 31121308L       Right P/N 31121308R

 

Manual Steering Rack

More precise steering and a 14 lb. weight reduction when all the power steering components are removed. Parasitic load on the engine caused by the pump is also eliminated. No more steering effort required at speed, noticeably more effort required for low speed maneuvers. Kit includes new steering rack and necessary linkage parts.           P/N 32110325

 

Performance Bushings

 

Hard Rubber Bushings-Will slightly stiffen ride. Use for street, autocross, and competition.

 

Offset Upper Support Bearing Mounts-Improves caster and camber angles for better front end traction and reduced outer edge tire wear. Sold in pairs.     P/N 3131143

 Offset Lower Control Arm Bushings-Improves caster and camber, also provides necessary clearance for larger wheel/tire packages. This solid bushing reduces fore and aft wheel movement for more precise steering. Sold in pairs.   P/N 3112222

Rear Subframe Mounts-Stronger than stock, built to handle the increased loads of modified suspensions and engines. Sold in pairs. P/N 3330108

Differential Mount Bushing-Same advantages as subframe mounts, above.   P/N 3330109

Complete Hard Rubber Kit-Includes all above part numbers in a convenient kit.  P/N 31501E30

Offset Rear Trailing Arm Bushings-Used for making small camber and toe changes to the rear suspension. Sold in pairs.  P/N 332202203

 

Polyurethane Bushings

 

Trailing Arm Bushings-Complete kit with metal sleeves. Can be used on the street or track. P/N 332202204

 

Delrin Bushings-No compliance, no deflection. For track use.

 

Offset Lower Control Arm Bushings     P/N 311202325 (pair)

 

Differential Mount Bushing      P/N 33120325

 

Trailing Arm Bushings      P/N 331201002 (complete kit)

 

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