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At IWS we specialize in custom ordering, building, and outfitting heavy duty towing equipment. Over the years we have built and sold all different types of heavy-duty chassis. We can provide you with firsthand knowledge of all the different models Miller and IWS recommend in the heavy-duty segment. We can provide you with many different manufacturers such as Peterbilt, Kenworth, Freightliner and International. With heavy duty chassis, there are many different options to choose from. To quote a heavy-duty chassis, we will take you through the custom ordering process as there is not a standard chassis for every application. When you are making a large investment like this, you want to be assured that you are buying the right piece of equipment for your fleet. At IWS we have the staff, the knowledge, and experience to ensure that you are going to get the best heavy-duty chassis for your wrecker on the market.
| Sprinter 3500 | F-550 Super Duty XLT | S2-RV | M2-106 | Newmar M2-106 | M2-112 | Cascadia 116 IWS Signature Series Chassis | Cascadia 126 IWS Signature Series Chassis | 567 | VNR 113 | VNL 125 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| LENGTH (Back of Cab to Front Bumper) | 99.5" | 120" | 106" | 106" | 106" | 116" | 116" | 126" | 125" | 113" | 125" |
| ENGINE | Mercedes Blue Tec 3.0 L Turbo Diesel | Ford Powerstroke Diesel (6.7 Litre) | Cummins B 6.7 (6.7 Litre) | Cummins L9 (8.9 Litre) | Cummins L9 (8.9 Litre) | Detroit DD13 (13 Litre) | Detroit DD13 (13 Litre) | Detroit DD16 (16 Litre) | Cummins X15 (15 Litre) | Volvo D13 | Volvo D13 |
| HORSEPOWER | 188 hp | 330 hp | 360 hp | 350 hp | 350 hp | 505 hp | 505 hp | 600 hp | 565 hp | 500 hp | 500 hp |
| TORQUE (lb-ft) | 325 | 750 | 800 | 1150 | 1150 | 1850 | 1850 | 1850 | 1850 | 1850 | 1850 |
| AUTOMATIC TRANSMISSION | Tronic 7- Speed Automatic | Torqshift 6- Speed Automatic | Allison 3000 Series 6-Speed Automatic | Allison 3000 Series 6-Speed Automatic | Allison 3000 Series 6-Speed Automatic | Allison 4000 Series 6-Speed Automatic | Allison 4000 Series 6-Speed Automatic | Allison 4000 Series 6-Speed Automatic | Allison 4000 Series 6-Speed Automatic | N/A | N/A |
| AUTOMATED TRANSMISSION | N/A | N/A | N/A | N/A | N/A | Detroit DT12 12-Speed Automated | Detroit DT12 12-Speed Automated | Detroit DT12 12-Speed Automated | Eaton Ultrashift 13-Speed Automated | Volvo I-Shift 12-Speed Automated | Volvo I-Shift 12-Speed Automated |
| COLLISION MITIGATION SYSTEM | Active Brake Assist | N/A | N/A | Standard | Standard | Standard | Standard | Standard | N/A | Standard | Standard |
| ADAPTIVE CRUISE CONTROL | Active Distance Assist Distronic | N/A | N/A | Standard | Standard | Standard | Standard | Standard | N/A | Standard | Standard |
| LANE DEPARTURE WARNING | Standard | N/A | N/A | Standard | Standard | Standard | Standard | Standard | N/A | Standard | Standard |
| BLIND SPOT MONITORING SYSTEM | N/A | N/A | N/A | Standard | Standard | Standard | Standard | Standard | N/A | Standard | Standard |
| AUTOMATIC TRACTION CONTROL | Standard | Standard | Standard | Standard | Standard | Standard | Standard | Standard | Standard | Standard | Standard |
| BRAKES | Power Disc | Power Disc | Air Drum | Air Drum | Air Drum | Air Disc | Air Disc | Air Disc | Air Disc | Air Drum | Air Drum |
| WHEEL CUT | 45 Degrees | 45 Degrees | 55 Degrees | 55 Degrees | 55 Degrees | 50 Degrees | 50 Degrees | 50 Degrees | 50 Degrees | 50 Degrees | 50 Degrees |
| AIR BAG | Driver and Passenger Front and Side Air Bag | Driver and Passenger Front and Side Curtain | N/A | N/A | N/A | N/A | N/A | N/A | N/A | Drivers Side Only | Drivers Side Only |
| CHASSIS BATTERIES | (1) 12 V AGM 95ah | (1) 12 V 750 CCA | (2) Group 31 | (2) Group 31 | (2) Group 31 | (3) Group 31 | (3) Group 31 | (3) Group 31 | (3) Group 31 | (3) Group 31 | (3) Group 31 |
| ALTERNATOR | 220 Amp | Dual (332 Amp Total) | 180 Amp | 180 Amp | 180 Amp | 270 Amp | 270 Amp | 270 Amp | 270 Amp | 270 Amp | 270 Amp |
| ENGINE BRAKING | N/A | Diesel Engine Exhaust Brake | Cummins Integral Exhaust Brake with VG Turbo | Cummins Compression Brake Brake (2) Stage Low, High | Cummins Compression Brake Brake (2) Stage Low, High | Jacobs Compression Brake (3) Stage Low, Medium, High | Jacobs Compression Brake (3) Stage Low, Medium, High | Jacobs Compression Brake (3) Stage Low, Medium, High | Cummins Compression Brake (3) Stage Low, Medium, High | Volvo Compression Engine Brake (3) Stage, Low, Medium, High | Volvo Compression Engine Brake (3) Stage, Low, Medium, High |
| FUEL TANK | 26 Gallons | 66.5 Gallon | (1) 100 Gallon | (2) 50 Gallon | (2) 50 Gallon | (1) 120 Gallon | (1) 120 Gallon | (1) 120 Gallon | (1) 120 Gallon | (1) 125 Gallon | (1) 125 Gallon |
| DEF TANK CAPACITY | 6 Gallons | 7 Gallons | 6 Gallon | 6 Gallon | 6 Gallon | 13 Gallon | 13 Gallon | 13 Gallon | 13 Gallon | 18 Gallon | 18 Gallon |
| FRONT AXLE SUSPENSION | 4,080 | 7,500 lb Coil Spring | 12,000 lb. Taper Leaf | 13,300 lb. Taper Leaf | 13,300 lb. Taper Leaf | 18,000 lb. Taper Leaf | 18,000 lb. Taper Leaf | 18,000 lb. Taper Leaf | 18,000 lb. Taper Leaf | 18,000 lb. Taper Leaf | 18,000 lb. Taper Leaf |
| FRONT TIRE SIZE | 215/85 R16 | 225/ 70R / 19.5 | 294 / 75R / 22.5 | 295 / 75R / 22.5 | 295 / 75R / 22.5 | 315 / 80R / 22.5 | 315 / 80R / 22.5 | 315 / 80R / 22.5 | 315 / 80R / 22.5 | 315 / 80R / 22.5 | 315 / 80R / 22.5 |
| SINGLE REAR AXLE SUSPENSION | 7,060 | 14,406 lb Leaf Spring Suspension | 19,000 lb. Airliner Suspension | 21,000 lb. Airliner Suspension | 21,000 lb. Airliner Suspension | 23,000 lb. Airliner Suspension | 23,000 lb. Airliner Suspension | 23,000 lb. Airliner Suspension | 23,000 lb Peterbilt Air Trac Suspension | 23,000 lb Meritor Wabco Air Suspension | 23,000 lb Meritor Wabco Air Suspension |
| TANDEM REAR AXLE SUSPENSION | N/A | N/A | N/A | N/A | N/A | 40,000 lb. Airliner Suspension | 40,000 lb. Airliner Suspension | 40,000 lb. Airliner Suspension | 40,000 lb Peterbilt Air Trac Suspension | 40,000 lb Meritor Wabco Air Suspension | 40,000 lb Meritor Wabco Air Suspension |
| REAR TIRE SIZE | 215/85 R16 | 225/ 70R / 19.5 | 294 / 75R / 22.5 | 295 / 80R / 22.5 | 295 / 80R / 22.5 | 295 / 80R / 22.5 | 295 / 80R / 22.5 | 295 / 80R / 22.5 | 295 / 80R / 22.5 | 295 / 80R / 22.5 | 295 / 80R / 22.5 |
| AXLE DIFFERENTIAL LOCK | N/A | N/A | N/A | Standard | Standard | Standard | Standard | Standard | Standard | Standard | Standard |
| AIR SUSPENSION DUMP VALVE | N/A | N/A | N/A | N/A | N/A | Standard | Standard | Standard | Standard | Standard | Standard |
| GVWR SINGLE REAR AXLE (LBS) | 11030 | 14,706 | 31,000 | 34,300 | 34,300 | 41,000 | 41,000 | 41,000 | 41,000 | 41,000 | 41,000 |
| GVWR TANDEM REAR AXLE (LBS) | N/A | N/A | N/A | N/A | N/A | 58,000 | 58,000 | 58,000 | 58,000 | 58,000 | 58,000 |
| GCWR SINGLE REAR AXLE | 15,250 | 40,000 | 46,000 | 55,300 | 55,300 | 60,000 | 60,000 | 60,000 | 60,000 | 60,000 | 60,000 |
| GCWR TANDEM REAR AXLE | N/A | N/A | N/A | N/A | N/A | 80,000 | 80,000 | 80,000 | 80,000 | 80,000 | 80,000 |
| TOWING CAPACITY SINGLE REAR AXLE (LBS) | 7,500 | 12,000 | 12,000 | 20,000 | 20,000 | 20,000 | 20,000 | 20,000 | 20,000 | 20,000 | 20,000 |
| TOWING CAPACITY TANDEM REAR AXLE (LBS) | N/A | N/A | N/A | N/A | N/A | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 |
| AVAILABLE ON THE VIENNA | YES | NO | NO | NO | NO | NO | NO | NO | NO | NO | NO |
| AVAILABLE ON THE VERACRUZ | NO | YES | NO | NO | NO | NO | NO | NO | NO | NO | NO |
| AVAILABLE ON THE VALENCIA | NO | NO | YES | NO | NO | NO | NO | NO | NO | NO | NO |
| AVAILABLE ON THE VERONA | NO | NO | NO | YES | YES | NO | NO | NO | NO | NO | NO |
| AVAILABLE ON THE XL | NO | NO | NO | NO | NO | YES | YES | YES | NO | YES | YES |
| AVAILABLE ON THE CLASSIC | NO | NO | NO | NO | NO | YES | YES | YES | YES | YES | YES |
| AVAILABLE ON A SHOW HAULER | NO | NO | NO | YES | YES | YES | YES | YES | YES | YES | YES |
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