JavaScript seems to be disabled in your browser.
You must have JavaScript enabled in your browser to utilize the functionality of this website.

Welcome to KLM Performance

High Performance Diesel and Gas Parts for Cars, Trucks, UTVs, and Class 8 Vehicles!

Please feel free to call at 203-210-7200 or Contact Us if you have any questions or cannot find what you need.

When you buy from KLM, you'll receive excellent customer service that aligns with the exacting standards of the brands we offer: FASS, AirDog, Crown Performance, Fluidampr, Vibratech, ARP, Borgeson Steering, Flex-A-lite, Fleetguard, Mopar, Walker Evans Racing, Baja Designs, and more.

Our vast selection of aftermarket accessories includes:

and much more!

Why make KLM Performance your first choice for aftermarket accessory parts?

Because it's our mission to provide top notch diesel and suspension parts, filters, programmers, steering system components, OEM replacement parts, fuel pumps, studs electric fans and other performance products. We constantly add product lines from innovative manufacturers who strive to create the best automotive products anywhere...

Plus, installation referrals are available for all products we sell. If there's something you don't see on this website, please call us at 203-210-7200.

Featured products

75-5019 Chevy/GMC Silverado/Sierra 07.5-10 6.6L LLY Duramax

List Price: $211.45

FASS 150 Replacement Filter Set 3 Micron

List Price: $54.15

Dynatrac Jeep ProSteer Ball Joint JP44-2X3050-A

List Price: $485.95

ARP 247-4204 Custom Age 625+ Cummins Diesel Head Stud Kit

List Price: $1,181.65

Dodge Cummins 6.7L Oil Service Pack

List Price: $109.98

Walker Evans Racing Kawasaki Teryx Rear Piggy Back Coil Over Shock Kit

List Price: $1,120.00 Your Price: $887.00 You Save: $233.00 (21 %)

Walker Evans Racing Polaris RZR-S Piggy Back Coil Over Shock Kit

List Price: $2,099.95 Your Price: $1,775.00 You Save: $324.95 (15 %)

MaxSpool Cummins 12V Billet Chromoly Heavy Duty Pushrods

List Price: $249.00

Mag-Hytec E4OD/4R100 Transmission Pan

List Price: $345.00 Your Price: $327.75 You Save: $17.25 (5 %)

MaxSpool Engineering Duramax Dual Valve Springs With Retainers

List Price: $523.00

Ford 6.0L Powerstroke Updated Standpipe Tube and Dummy Plug Kit

List Price: $140.75

Cummins 6.7L Fuel Filter & Oil Filter Maintenance Kit

List Price: $131.48

Flex-a-Lite 50016 Flex-a-Chill Coolant Additive

List Price: $14.95

Rigid Industries 10611 6" E-Series Flood LED Light Bar

List Price: $299.99 Your Price: $254.99 You Save: $45.00 (15 %)

Rigid Industries 11021 10" E-Series Spot LED Light Bar RDL10P

List Price: $399.99 Your Price: $339.99 You Save: $60.00 (15 %)

Rigid Industries 13031 30" Spot/Flood Combo LED Light Bar

List Price: $999.99 Your Price: $949.99 You Save: $50.00 (5 %)

Rigid Industries 12011 20" E-Series Flood LED Light Bar RGDL20E

List Price: $699.99 Your Price: $664.99 You Save: $35.00 (5 %)

Rigid Industries 13011 30" E-Series Flood LED Light Bar RGDL30E

List Price: $999.99 Your Price: $949.99 You Save: $50.00 (5 %)

Rigid Industries 15011 50" E-Series Flood LED Light Bar RGDL50E

List Price: $1,599.99 Your Price: $1,359.00 You Save: $240.99 (15 %)

Walker Evans 2.0" OE Polaris RZR 900XP Dual Rate Coil Over Shock Front

List Price: $1,050.90

Walker Evans Racing Kawasaki Teryx Front Piggy Back Coil Over Shock Kit

List Price: $1,120.00 Your Price: $885.98 You Save: $234.02 (21 %)

Walker Evans Racing Polaris RZR Front Piggy Back Coil Over Shock Kit

List Price: $1,120.00 Your Price: $887.97 You Save: $232.03 (21 %)

Walker Evans Racing Polaris RZR Rear Piggy Back Coil Over Kit

List Price: $1,200.00 Your Price: $887.99 You Save: $312.01 (26 %)

Rigid Industries 11096 E Series Light Cover White

List Price: $18.00 Your Price: $16.98 You Save: $1.02 (6 %)

Rigid Industries 11093 E-Series Amber Cover

List Price: $18.00 Your Price: $16.98 You Save: $1.02 (6 %)

Rigid Industries 20196 Dually Series Light Cover White

List Price: $14.00 Your Price: $9.98 You Save: $4.02 (29 %)

Rigid Industries 20191 D2 Series Light Cover Black

List Price: $7.49

TJM XGS 80 Series Land Cruiser 2 (50mm) Lift Coil Springs

List Price: $495.00 Your Price: $398.00 You Save: $97.00 (20 %)

TJM XGS 80 Series Land Cruiser 2 (50mm) Front Lift Coil Springs

List Price: $495.00 Your Price: $225.00 You Save: $270.00 (55 %)

Ford 7.3L Replacement Oil Pan & Gasket

List Price: $395.98

Borgeson 000943 Dodge Steering Shaft

List Price: $248.00 Your Price: $215.59 You Save: $32.41 (13 %)

X-tra Lube Concentrate Oil Treatment

List Price: $22.65

Colt Cams The Big Stick High Performance Cummins Diesel Camshaft

List Price: $678.00 Your Price: $644.00 You Save: $34.00 (5 %)

Mopar 09 Steering Upgrade Kit for 03-08 2500/3500

List Price: $499.85

CJC Off Road Dodge Ram 2500/3500 30" LED Light Bar Mounting Brackets

List Price: $78.95

Ford Raptor Stainless Steel Kevlar Braided Brake Lines

List Price: $207.45

Borgeson 800120 Dodge Ram Power Steering Box

List Price: $517.75

6.7L Cummins Diesel Fuel Rail Plug

List Price: $36.00

ICON 214030 2003-2013 Dodge Ram 2500/3500 Adjustable Track Bar

List Price: $394.95

Moroso 27336 Ford 7.3L Replacement Oil Pan

List Price: $287.58

Cummins 3954830 | 5292744 190 Degree Thermostat Dodge Ram Cummins

List Price: $34.59

Flex-A-Lite 274 Dual Electric Fans 03-07 Ford 6.0L

List Price: $709.95

Flex-A-Lite 275 Dual Electric Fans 03-07 Ford 6.0L

List Price: $599.95

Cummins 5.9L Fuel Filter & Oil Filter Maintenance Kit 03-07

List Price: $82.98

FASS 150 Filter Set 10 Micron

List Price: $37.01

Cummins 6.7L Fuel Filter & Oil Filter Maintenance Kit 2010+

List Price: $149.98

Cummins 5292742 180 Degree Thermostat

List Price: $45.09

ICON 39290 1999 to 2004 Ford Super Duty Adjustable Pan Rod Bar

List Price: $249.95

ICON 64030 2005+ Ford Super Duty F250 / F350 Adjustable Pan Rod Track Bar

List Price: $329.95

ICON 64031 2005+ Ford Super Duty F250 / F350 Adjustable Pan Rod Track Bar with Bearing

List Price: $408.90

ICON 64032 2005+ Ford Adjustable Pan Rod Bar Upgrade Kit

List Price: $119.95

Walker Evans Racing Kawasaki Teryx4 Front Piggy Back Coil Over Shock Kit

List Price: $865.00

Walker Evans Racing Kawasaki Teryx4 Rear Piggy Back Coil Over Shock Kit

List Price: $865.00

Borgeson 000910 Jeep CJ Steering Shaft

List Price: $228.85

Borgeson 000905 Jeep CJ Steering Shaft

List Price: $228.85

Baja Designs 448330 Dodge Ram 2500/3500 30" LED Light Bar Mounting Brackets

List Price: $71.95

ICON 214203 2014+ Dodge Ram 2500/3500 Adjustable Track Bar

List Price: $459.95

Baja Designs 448011 Dodge Ram 2500/3500 Fog Pocket Bracket Kit

List Price: $81.18

Baja Designs 640124 Chevy Silverdao GM Sierra Hood Mount Light Brackets

List Price: $121.45

Baja Designs 640123 GM Colorado Canyon Hood Mount Light Brackets

List Price: $121.45

Baja Designs 447582 GM Colorado Canyon Fog Pocket Kit

List Price: $63.95

Cummins 5292738 180 Degree Thermostat

List Price: $34.78

Baja Designs 447131 Toyota Tacoma LED Light Bar Mounting Brackets

List Price: $56.95

Borgeson 000925 Jeep Wrangler YJ Steering Shaft

List Price: $269.75

Baja Designs 448306 Dodge Ram 1500 Fog Pocket Mount Kit

List Price: $134.96

Walker Evans Racing Polaris RZR 800-4 UTV Rear Piggy Back Coil Over Kit

List Price: $745.00

Walker Evans Racing Polaris RZR 800-4 UTV Front Piggy Back Coil Over Kit

List Price: $745.00

Walker Evans Racing Polaris RZR 800-4 UTV Piggy Back Coil Over Kit

List Price: $1,421.45

Walker Evans Racing Polaris RZR 800 UTV Piggy Back Coil Over Kit

List Price: $1,645.00

Baja Designs 447588 2014-2017 Chevy Silverado 1500/2500/3500 30" LED Grill Mounting Bracket Kit

List Price: $94.99

Baja Designs 447579 Chevy HD Multi-Light Bumper Kit 15-17

List Price: $112.45

Baja Designs 447551 Ford F-150 Raptor Hood Mount Light Brackets

List Price: $121.45