Medium Tactical Vehicle Replacement
| MTVR | |
|---|---|
| MTVR MK23 standard cargo trucks with Armor Protection Kits (APKs) and armored rear troop carrier compartments | |
| Type | Family of 6x6 tactical trucks with 7-tons of off road payload (U.S. tons). On road payload up to 15 U.S. tons. | 
| Place of origin | United States | 
| Service history | |
| In service | 2001–present | 
| Used by | U.S. Marine Corps and others (see Operators) | 
| Production history | |
| Designer | Oshkosh Defense | 
| Designed | 1996 (initial development contract) | 
| Manufacturer | Oshkosh Defense | 
| Produced | 1999–present | 
| No. built | 11,359 to U.S. Marines/Navy, plus 430 (est.) export sales | 
| Variants | (full details in main text) 
 | 
| MK23 standard cargo truck | |
|---|---|
| Specifications | |
| Mass | 13,200 kg (29,100 lbs) (curb w/fuel) | 
| Length | 8 m (314.9 in) | 
| Width | 2.49 m (98 in) | 
| Height | 3.185 m (125.4 in) (cab; reducible for transport) | 
| Crew | 2 | 
| Armor | a-kit/b-kit; U.S. Army Long Term Armor Strategy (LTAS) compliant | 
| Engine | Caterpillar (CAT) C-12 Advanced Diesel Engine Management (ADEM) III, 11.9-liter, 6-cylinder inline water-cooled diesel developing 425 hp @ 1800 rpm and 1,550 ft-lb torque at 2100 rpm | 
| Payload capacity | 14,199 lbs / 7 U.S. tons off-road 30,000 lbs / 15 U.S. tons payload on primary & secondary roads | 
| Transmission | Allison HD 4070P 7-speed automatic and Oshkosh 30000 single-speed with torque proportioning differential and manual differential lock | 
| Suspension | Oshkosh TAK-4 independent suspension, coil spring upper/lower control arms; anti-roll bar on second and third axles. Front axle rated at 16,000 lb, second at 23,500 lb, third at 25,500 lb | 
| Fuel capacity | 295 L (78 gal) | 
| Operational range | 483 km (300 mi) | 
| Maximum speed | 105 km/h (65 mph) | 
| Steering system | Power-assisted, front axle (third axle contra-steer on MK31 tractor) | 
The Medium Tactical Vehicle Replacement (MTVR) is a family of medium to heavy six-wheel drive cargo and tactical trucks, used by the United States Marine Corps. The first MTVRs were delivered in late 1999. The MTVR is the equivalent of the U.S. Army's Family of Medium Tactical Vehicles (FMTV); the Marines do not use the FMTV (with the exception of the FMTV-based HIMARS) and the Army does not use the MTVR.
There were originally four, later seven, MTVR variants, then nine (plus a sub-variant) as deliveries and development continued. A dedicated trailer and prototype/developmental MTVRs have also been produced.
The MTVR was designed and is manufactured by Oshkosh Defense.