FASS Motorsports Off-Road parts and accessories

Thank you to all who made Dyno Day special!

🚀 Just Launched - FASS Drop-In Series Diesel Fuel System for Cummins ISX and X15

Monitor your FASS Fuel Filter Life with FASS Connect!

Trail Camp Essentials

Trail-Ready Summer Starts Here

Trail Camp Essentials Shop Tonneau Covers

Popular Brands

Top Sellers

5% off

FASS Fuel Systems
FASS Fuel Systems Filter Pack FP3000

Sale price USD 99⁰⁰ Regular price USD 104²¹

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5% off

FASS Fuel Systems
FASS Fuel Systems XL Filter Pack FP3000XL

Sale price USD 56⁰⁵ Regular price USD 59⁰⁰

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S&S DIESEL
S&S Diesel Gen2.1 CP4 Disaster Prevention Bypass Kit Ford 2011-2025 6.7L Powerstroke

Regular price USD 400⁰⁰

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Carli Suspension
14-23 RAM 2500/3500 ADJUSTABLE TRACK BAR

Regular price USD 543⁰⁰

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Carli Suspension
17-24 FORD F250/F350 HIGH MOUNT STEERING STABILIZER

Regular price USD 473⁰⁰

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Carli Suspension
14-23 RAM 2500 2.5" LEVELING SYSTEM, DIESEL

Regular price USD 1,331⁰⁰

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Carli Suspension
Carli - FORD F250/F350 Low Mount Steering Stabilizer, with Differential Guard 05-22

Regular price USD 731⁰⁰

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Carli Suspension
14-23 RAM 2500/3500 STAINLESS LOW MOUNT STEERING STABILIZER

Regular price USD 357⁰⁰

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Carli Suspension
Carli - FORD F250/F350 2.5"/3.5" Adjustable Radius Arms 05+

Regular price USD 1,641⁰⁰

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Carli Suspension
05-23 FORD F250/F350 CASTER SHIMS

Regular price USD 81⁰⁰

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Carli Suspension
03-13 RAM ADJUSTABLE TRACK BAR

Regular price USD 543⁰⁰

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Carli Suspension
05-23 FORD F250/F350 DIESEL COIL SPRINGS 2.5"

Regular price USD 405⁰⁰

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Carli Suspension
03-13 RAM 2500/3500 SUSPENSION BALL JOINTS

Regular price USD 940⁰⁰

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Carli Suspension
17-23 FORD F250/F350 ADJUSTABLE TRACK BAR

Regular price USD 575⁰⁰

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Carli Suspension
Carli - FORD F250/F350 Torsion Sway Bar 2.5" & 3.5" Lift 17+

Regular price USD 1,490⁰⁰

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Carli Suspension
Carli Suspension 2.5" Commuter 2.0 System, BASE, for 2017+ Ford F250/F350 Diesel

Regular price USD 2,272⁰⁰

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Carli Suspension
14-23 RAM 2500/3500 DIESEL LINEAR RATE COIL SPRINGS

Regular price USD 483⁰⁰

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FASS Motorsports
FASS 80's Tee

Regular price USD 30⁰⁰

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Carli Suspension
13-23 RAM 2500/3500 FABRICATED RADIUS ARMS, LIFT SYSTEMS

Regular price USD 1,761⁰⁰

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Carli Suspension
05-16 FORD F250/F350 ADJUSTABLE TRACKBAR

Regular price USD 438⁰⁰

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New Arrivals

FASS Fabrication 2014-2026 Ram 2500/3500 Coil Over Conversion Kit

Take control of your truck’s stance, handling, and performance with the FASS Fabrication Coil Over Conversion Kit.

Carbon Shocks
Carbon Shocks 2014-2026 Ram 3500 Rear Shocks 2.5"

Regular priceFrom USD 799⁰⁰

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Pusher
Pusher 3.5" MEGA Intake System with 3.5" Passenger Side Intercooler Tube 1998-2002 Dodge Cummins

Regular priceFrom USD 629⁹⁹

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33% off

Bilstein
Bilstein 2023+ Chevrolet Colorado (Ex. Trail Boss & GMC Canyon) B6 4600 Shock - Front

Sale price USD 123⁰³ Regular price USD 182⁹⁰

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47% off

Bilstein
Bilstein 2019+ Toyota RAV4 / 21-24 Venza B4 OE Replacement Shock - Front Right

Sale price USD 139⁰⁴ Regular price USD 260⁰⁷

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47% off

Bilstein
Bilstein 2019+ Toyota RAV4 / 21-24 Venza B4 OE Replacement Shock - Front Left

Sale price USD 139⁰⁴ Regular price USD 260⁰⁷

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47% off

Bilstein
Bilstein 2019+ Toyota RAV4 / 21-24 Venza B4 OE Replacement Shock - Rear

Sale price USD 89⁰² Regular price USD 167⁰⁵

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Pusher
Pusher 3.5" MEGA Intake System with Cross-Air 1998.5-2002 Dodge Cummins

Regular priceFrom USD 699⁹⁹

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Pusher
Pusher Low Mount Compound Turbo System for 1998-2002 Dodge Cummins 24v Trucks

Regular price USD 2,899⁹⁹

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Atturo Tire
Atturo Trail Blade ATS Tire - 35x12.50R26LT 121Q

Regular price USD 487⁶³

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Zone Offroad
3 Inch Lift Kit | Chevy Silverado or GMC Sierra 1500 (2007-2018)

Regular priceFrom USD 295⁸⁵

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Zone Offroad
Zone Offroad 2021-2026 Ford F-150 2WD 6in Suspension Lift Kit

Regular priceFrom USD 1,415⁶⁰

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20% off

Westin
Westin/HDX 25-26 Toyota 4Runner Drop Nerf Step Bars - Textured Black

Sale price USD 655¹⁷ Regular price USD 818⁹⁷

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TOYO
Toyo Extensa HP II Tire - 235/40R19 96W XL

Regular price USD 206³⁵

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3% off

South Bend Clutch
South Bend Clutch 67-68 Chevrolet Chevelle/Malibu 5.7L Stg 2 Daily Clutch Kit

Sale price USD 387⁰¹ Regular price USD 398⁹⁹

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19% off

MBRP
MBRP 2015-2020 Ford F-150 3in Single Side Exit Armor BLK Cat-back Exhaust

Sale price USD 850²² Regular price USD 1,050²⁷

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5% off

King Shocks
King Shocks 2014-2026 Ram 2500 4WD Rear 2.5 Dia Piggy Hose Reservoir Shock (Pair)

Sale price USD 2,100⁰⁷ Regular price USD 2,210⁶⁰

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5% off

King Shocks
King Shocks 2014-2026 Ram 3500 4WD Rear 2.5 Dia Piggyback Reservoir Shock (Pair)

Sale price USD 1,072⁸⁴ Regular price USD 1,129³⁰

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Fury Tires
Fury Offroad Country Hunter MTII 37x13.50R17LT

Regular price USD 428⁹⁵

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Pusher
New Factory Cummins Intake Manifold Gasket for 5.9L Engines

Regular price USD 7⁰⁰

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Pusher
APPS Relocation Bracket for 2003-2007 Cummins Cross-Air

Regular price USD 25⁰⁰

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Pusher
Pusher Heater Grid Delete for 1989-2007 Dodge Cummins 5.9L ram 2500/3500

Regular price USD 75⁹⁹

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Pusher
Pusher Stock Driver-Side Intercooler Tube for 2003-2007 Dodge Cummins

Regular priceFrom USD 124⁹⁹

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Pusher
Pusher Intake Manifold 2003-2007 Dodge Cummins

Regular priceFrom USD 174⁹⁹

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Pusher
Pusher Straight Shot 48RE Transmission Dipstick Tube 2003-2007 Dodge Cummins

Regular priceFrom USD 174⁹⁹

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Synthetic Motor Oils

Hot Shot's Secret
Hot Shot's Secret BLUE DIAMOND 10W30 PAO Synthetic Engine Oil - 1 GALLON

Regular price USD 54⁹⁵

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Hot Shot's Secret
Hot Shot's Secret BLUE DIAMOND 10W30 PAO Synthetic Engine Oil - 5 GALLON

Regular price USD 274⁹⁵

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Hot Shot's Secret
Hot Shot's Secret BLUE DIAMOND 15W40 PAO Synthetic Engine Oil - 1 GALLON

Regular price USD 54⁹⁵

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Hot Shot's Secret
Hot Shot's Secret BLUE DIAMOND 15W40 PAO Synthetic Engine Oil - 5 GALLON

Regular price USD 274⁹⁵

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Hot Shot's Secret
Hot Shot's Secret BLUE DIAMOND 5W40 PAO Synthetic Engine Oil - 1 GALLON

Regular price USD 54⁹⁵

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Hot Shot's Secret
Hot Shot's Secret BLUE DIAMOND 5W40 PAO Synthetic Engine Oil - 5 GALLON

Regular price USD 274⁹⁵

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Hot Shot's Secret
Hot Shot's Secret GREEN DIAMOND 10W30 Full Synthetic Heavy Duty Engine Oil - 1 GALLON

Regular price USD 44⁹⁵

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Hot Shot's Secret
Hot Shot's Secret GREEN DIAMOND 10W30 Full Synthetic Heavy Duty Engine Oil - 5 GALLON

Regular price USD 203⁹⁵

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Hot Shot's Secret
Hot Shot's Secret GREEN DIAMOND 15W40 Full Synthetic Heavy Duty Engine Oil - 1 GALLON

Regular price USD 39⁹⁹

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Hot Shot's Secret
Hot Shot's Secret GREEN DIAMOND 15W40 Full Synthetic Heavy Duty Engine Oil - 5 GALLON

Regular price USD 174⁹⁵

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Hot Shot's Secret
Hot Shot's Secret GREEN DIAMOND 15W40 Semi Synthetic Heavy Duty Engine Oil - 1 GALLON

Regular price USD 35⁹⁵

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Hot Shot's Secret
Hot Shot's Secret GREEN DIAMOND 15W40 Semi Synthetic Heavy Duty Engine Oil - 5 GALLON

Regular price USD 159⁹⁵

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Hot Shot's Secret
Hot Shot's Secret GREEN DIAMOND 5W40 Full Synthetic Heavy Duty Engine Oil - 1 GALLON

Regular price USD 40⁹⁵

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Hot Shot's Secret
Hot Shot's Secret GREEN DIAMOND 5W40 Full Synthetic Heavy Duty Engine Oil - 5 GALLON

Regular price USD 184⁹⁵

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K&N Engineering
K&N 0W-20 Fully Synthetic Motor Oil - 1 Quart

Regular price USD 10⁹⁹

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K&N Engineering
K&N 0W-20 Fully Synthetic Motor Oil - 5 Quarts

Regular price USD 37⁰⁰

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K&N Engineering
K&N 5W-20 Fully Synthetic Motor Oil - 1 Quart

Regular price USD 10⁹⁹

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K&N Engineering
K&N 5W-20 Fully Synthetic Motor Oil - 5 Quarts

Regular price USD 37⁰⁰

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K&N Engineering
K&N 5W-30 Fully Synthetic Motor Oil - 1 Quart

Regular price USD 10⁹⁹

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K&N Engineering
K&N 5W-30 Fully Synthetic Motor Oil - 5 Quarts

Regular price USD 37⁰⁰

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K&N Engineering
K&N 5W-40 Fully Synthetic Motor Oil - 1 Quart

Regular price USD 11⁹⁹

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FASS Motorsports Blog

MINT 7.3 Powerstroke F-350 gets the full FASS Motorsports treatment!
A mint-condition, 2-owner 7.3 Powerstroke F-350 came to FASS Motorsports for major upgrades including tuning, exhaust, BDS lift kit, FASS Fuel System, and more!
Jake Hopkins | June 2, 2026
Banks Monster-Ram Intake & Killer Grid Heater Upgrade | FASS Motorsports
Own a 6.7 Cummins? You NEED the Banks Monster-Ram Intake and Killer Grid Heater Upgrade!
Jake Hopkins | June 1, 2026
Own a '19–'24 6.7 Cummins? You need the Hamilton Cams Flat Tappet Conversion Kit.
Why is the Hamilton Cams Flat Tappet Conversion Kit is a must-do upgrade for 2019–2024 Ram 6.7 Cummins owners? Click to learn more!
Jake Hopkins | May 29, 2026
FASS Motorsports Dyno Day 2026: What You Need to Know!
FASS Motorsports Dyno Day 2026 is almost HERE! Check out the event map, dyno registration, rules, and why this FREE truck show is a can't-miss event.
Jake Hopkins | May 27, 2026
S&S Diesel CP3 Conversion Kits for 2011–2016 LML Duramax Trucks | FASS Motorsports
We sell and install S&S Diesel CP3 Conversion Kits for the 2011–2016 LML Duramax every day! Ditch that problematic CP4 today!
Jake Hopkins | May 21, 2026
First Look: Ram Rumble Bee, Rumble Bee 392, & Rumble Bee SRT
EXCLUSIVE first look at the new Ram Rumble Bee lineup, including the Rumble Bee 392 and 777HP, 170MPH Rumble Bee SRT muscle truck!
Jake Hopkins | May 20, 2026
Diesel Trucks for Dummies: Diesel Tuning EXPLAINED
Diesel Trucks for Dummies: Diesel Tuning EXPLAINED! Learn how EFI Live, EZ Lynk, and HP Tuners work, plus the difference between custom tuning and box tunes.
Jake Hopkins | May 13, 2026
1999–2026 Ford F-250/F-350 Rear Lowering Shackles | FASS Motorsports
Learn about PMF Suspension rear lowering shackles for 1999–2026 Ford F-250/F-350s. FASS Motorsports proudly sells and installs PMF Suspension products!
Jake Hopkins | May 12, 2026