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BMW parts, BMW accessories, BMW engine, BMW pulleys, BMW underdrive pulley
BMW Underdrive Pulleys   Harness the power being wasted under your BMWs hood with upgrades for your BMW engine bay from
KO Performance!

KO can point you in the right direction with BMW engine part upgrades - OEM replacement parts, or M-Technik parts, to parts from our BMW performance part suppliers like UUC Motorwerks, Victory Product Design, Schrick, & Eurosport High Performance. Underdrive pulleys, one of the most popular upgardes in this category, can quickly add a safe 5-11 horsepower to your wheels.

KO BMW M50 Manifold Conversion Kit
BMW Parts - KO E36 OBDI M3 M50 Manifold Conversion Kit
The KO OBDII to OBDI E36 M3 M50 Manifold Conversion kit allows you to convert your OBDII (1996-1999) M3's manifold into that of the less restrictive OBDI M3. The M50 manifold's runners are approximately 2x larger than those on the OBDII vehicles allowing grossly improved air flow.

Maintains low end power. Huge gains from 3500k+
KO Price: $349.99
On Sale!
Shipping Not Included
KO BMW M50 Manifold Conversion Kit
BMW Parts - VPD BMW E46 M3 Underdrive Pulleys
If you own an E46 BMW M3, your wait for effective, high quality underdrive pulleys is over.

On sale until November 2nd, 2004, these VPD underdrive pulleys will put a new zip in your M3 by lowering your throttle response times, and delivering more horsepower to the wheels of your BMW, instead of overdriving the BMW accessories.
KO Price: $175.00
FREE SHIPPING!
Slotted pulleys for low rotational inertia
BMW Superchargers - KO Performance Stage II Boost Kit
KO Performance is proud to announce the release of the first ever KO Performance Exclusive Designed product for BMWs - The KO Performance Vortech Stage II Boost Kit for Dinan and ESS BMW Superchargers!

This kit comes with everything you need to see over 300 whp in your 3 series E36 BMW.
KO Price: $1500.00
Shipping Not Included

On Sale!
Bump your Dinan BMW Supercharger up
BMW Parts - VPD BMW E36 3 series BMW Underdrive Pulleys
Victory Product Design E36 3 series BMW underdrive pulleys will regain wasted horsepower from overdriving your BMWs accessories, and channel that energy into your wheels, where you can put it to use.

Made from hard anodized 6061 T6 billet aluminum, these underdrive pulleys are good for 5-11 hp.
KO Price: $170.00
FREE SHIPPING!
E36 underdrive pulley kit looks sharp

 BMW Engine Upgrades - BMW Parts - BMW Accessories - BMW Underdrive Pulleys
KO BMW M50 Manifold Conversion Kit
KO Performance BMW Engine Parts and Performance Kits
KO Performance has been hard at work developing performance upgrades for your BMW that are cost effective and deliver real results.

The first offering in our line up of KO engineered performance kits is our M50 Manifold conversion kit.
KO Performance Engineering Products
KO BMW M50 Manifold Conversion Kit
Description
Models
Sub-Models
Years
MSRP
KO Price
Availability
KO BMW E36 OBDI M3 M50 Manifold Conversion Kit with M50 Manifold
KO Performance M50 Manifold Conversion Kit
E36
M3
325
1995-1999
1992-1995
$539.99
$349.99
Sale!
In stock

Add to Cart
KO BMW E36 OBDI M3 M50 Manifold Conversion Kit with OUT M50 Manifold
KO Performance M50 Manifold Conversion Kit
E36
M3
325
1995-1999
1992-1995
$270.99
$170.00
Sale!
In stock

Add to Cart

BMW Underdrive Pulleys from Victory Product Design
KO Performance is proud to carry Victory Product Design's entire line of fine in-house engineered BMW products.

These BMW underdrive pulleys are hard anodized black in 6061 T6 aluminum.
Lightest Underdrive Pulleys available!
Description
Models
Sub-Models
Years
MSRP
KO Price
Availability
Victory Product Design E46 M3 Underdrive Pulleys
E46
M3
2001-2004
$205.00
$175.00
In stock

Add to Cart
Victory Product Design E46 non-M3 Underdrive Pulleys
E46
323, 328, 325, 330 1999-2004
$180.00
$150.00
Sale!
In stock
Victory Product Design E36 3 series Underdrive Pulleys
E36
325, 330, M3 1992-1999
$180.00
$170.00
In stock

Add to Cart

Jim Conforti Shark Injector / Engine Chip for BMW Most Models
KO Performance is proud to carry Jim Conforti's entire line of fine, quality engineered BMW Shark Injectors and Engine Chips.

These BMW Shark Injectors are a hassle-free modification for your BMW.
KO Performance Engineering Products
Get Sharked!
Description
Models
Sub-Models
Years
MSRP
KO Price
Availability
Jim Conforti Shark Injector for E36/7, and E39 BMW
Shark Injector for E36/7 and E39 BMW
E36
E36/7

E39
323, 328, M3
Z3, MCoupe, MRoadster
528i
1996-1999
1999-2000

1996-1999
$399.00
$367.99
In stock
Jim Conforti Shark Injector for E36/7, E46, and E39 BMW
Jim conforti shark injector for 323 328 z3 BMW
E46
E36/7
E39
323i/ci, 328i/ci
Z3 2.3/2.8
528i
1999-2000
1999-2000
1999-2000
$399.00
$367.99
In stock
Jim Conforti Shark Injector for E46, E36/7, and E39 BMW
BMW shark injector for E46 325 330 e39 525 530
E36/7
E46
E39
Z3 2.5/3.0
325i/ci, 330i/ci
525i/530i
2001-2003
2001-2003
2001-2003
$399.00
$367.99
In stock
Jim Conforti Shark Injector for E46 M3, E36/7 MCoupe/MRoadster
bmw shark injector for e46 m3 and e36/7 mcoupe mroadster
E46
E36/7
M3
MCoupe/ MRoadster
2001-2005
2001-2005
$399.00
$367.99
In stock
Jim Conforti Shark Injector for E53 X5 3.0
BMW shark injector for e53 x5 3.0 jim conforti engine software
E53
X5 3.0 2001- 2/2003
$399.00
$367.99
In stock
Jim Conforti Shark Injector for E46 M3 with Euro headers, no cats
BMW shark injector for e53 x5 3.0 jim conforti engine software
E46
M3 with Euro Headers and no cats 2001-2005
$499.00
$467.99
In Stock
Jim Conforti Performance Chip for E36 318
bmw jim conforti performance chip for e36 318
E36
318 1992-1995
$299.00
$247.99
In Stock
Jim Conforti Performance Chip for E36 325 (1992)
jim conforti performance chip for bmw e36 325 1992
E36
325 1992 only
$299.00
$247.99
In Stock
Jim Conforti Performance Chip for E36 325 (93-95)
bmw performance chip e36 325 jim conforti
E36
325 1993-1995
$299.00
$247.99
In Stock
Jim Conforti Performance Chip for E36 M3 (1995)
jim conforti chip for BMW e36 m3 1995
E36
M3 1995 only
$299.00
$247.99
In Stock

OEM BMW M50 Manifold Basic Conversion Kit
Genuine OEM BMW Parts
KO Performance carries the entire line of BMW OEM Genuine parts which are currently in production and many which are not.

In particular, we have found a number of OEM for OEM replacement upgrades which can add substantial improvement.
Genuine OEM BMW Parts
often, converting from a stock
part for one BMW to that from
another, result in improved
performance
M50 OBDI Manifold Basic Conversion Kit
Description
Models
Sub-Models
Years
MSRP
KO Price
Availability
OEM part #: 11-61-1-735-727 M50 Manifold Basic Conversion Kit w/ manifold
OEM BMW M50 Manifold Basic Conversion Kit
E36
M3
325
1995-1999
1992-1995
n/a
n/a
In stock
OEM part #: 11-61-1-735-727 M50 Manifold Basic Conversion Kit w/out manifold
OEM BMW M50 Manifold Basic Conversion Kit
E36
M3
325
1995-1999
1992-1995
n/a
n/a
n/a
OEM part #: 11-61-1-735-727 M50 Manifold (new)
OEM E36 M50 OBDI Intake Manifold (new)
E36
M3
325
1995-1999
1992-1995
$657.50
$497.00
In stock

Add to Cart
OEM part #: 11-61-1-735-727 M50 Manifold (refurb)
OEM E36 M50 OBDI Intake Manifold (refurbished)
E36
M3
325
1995-1999
1992-1995
$657.50
$180.00
In stock

Add to Cart
M50 Manifold Fuel Rail Cover (alone)
M50 Conversion kit Fuel Rail Cover
E36
M3
1996-1999
n/a
$30.00
In stock

Add to Cart

Eurosport High Performance M50 Manifold Conversion Kit for E36 2.8L and 3.2L BMW
Eurosport High Performance - BMW aftermarket parts
KO Performance carries the entire line of Eurosport High Performance BMW parts and accessories.

Eurosport has designed a number of excellent custom pieces like their M50 Manifold Conversion kit.
Eurosport High Performance
Eurosport M50 OBDII Conversion Kit
Description
Models
Sub-Models
Years
MSRP
KO Price
Availability
OEM part #: 11-61-1-735-727 M50 Manifold OBDII Eurosport Conversion Kit
Eurosport High Performance M50 Manifold conversion kit
E36
M3
328
1996-1999
1996-1998
$375.00
n/a
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