Whether its for Landscaping, Drill Equipment, Delivery, or Overlanding, Isuzu's N-Series line of cabover trucks offer functionality and flexibility to any application. Pair that with RidgeRock's proprietary 4x4 system and you have a workhorse or adventure rig backed by years of development. With limited inventory of both new and pre-owned vehicles, it is becoming harder to find a chassis that fits your needs.
This series will help explore your options when deciding which cabover is right for you, from engine specs and load capacity, to wheelbase and chassis options.
NPR vs NQR vs NRR
By the numbers...
Diesel | NPR | NPR-HD | NQR | NRR |
GVWR | 13,000 lbs | 14,500 lbs | 17,950 lbs | 19,500 lbs |
Engine | 6.0L Vortec V8* | 5.2L Isuzu 4HK1-TC | 5.2L Isuzu 4HK1-TC | 5.2L Isuzu 4HK1-TC |
Power/Torque | 297hp @4,300 rpm/372 lb.-ft @ 4,000 rpm | 215hp @2,500 rpm/452 lb.-ft @ 1,850 rpm | 215hp @2,500 rpm/452 lb.-ft @ 1,850 rpm | 215hp @2,500 rpm/452 lb.-ft @ 1,850 rpm |
Body/Payload Allowance | 7,435-7,607 lbs | 8,339-8,536 lbs | 10,939-11,461 lbs | 12,294-12,875 lbs |
Axle Capacity F/R | 6,830/11,020 lbs | 6,830/11,020 lbs | 6,830/14,550 lbs | 7,275/14,550 lbs |
Transmission | Aisin A45465id 6-speed auto. w/ double overdrive | Aisin A45465id 6-speed auto. w/ double overdrive | Aisin A45465id 6-speed auto. w/ double overdrive | Aisin A45465id 6-speed auto. w/ double overdrive |
Est. Fuel Economy | 16 MPG | 11.98 MPG | 10.63 MPG | 10.13 MPG |
*Also available in efficient 3.0L Turbocharged intercooled diesel, though the 150hp and 282lb-ft torque is not recommended for 4x4 conversion.
Gasoline | NPR | NPR HD |
GVWR | 12,000 | 14,500 |
Engine | 6.0 L GMPT L96 V8 Vortec 6000 (optional KL8-Alt. Fuel Capable) | 6.0 GMPT L96 V8 Vortec 6000 (optional KL8-Alt. Fuel Capable) |
Power/Torque | 297hp @4,300 rpm/372 lb.-ft @4,000 rpm | 297hp @4,300 rpm/372 lb.-ft @4,000 rpm |
Body/Payload Allowance | 6,782-6978 lbs | 8,977-9,174 lbs |
Axle Capacity F/R | 6,830/11,020 lbs | 6,830/11,020 lbs |
Transmission | 6L90 6 Speed Auto w/ double overdrive | 6L90 6 Speed Auto w/ double overdrive |
Est. Fuel Economy | 9.5 MPG | 9.25 MPG |
**Vehicle specifications are based on standard cab models and may differ by year. Please consult with your dealer or vehicle VIN for confirmation
Diesel vs Gasoline
Our systems at RidgeRock is fit and tested to both diesel and gasoline engines so you have the freedom to choose the chassis that fits your needs. Questions to consider when deciding the platform two options include...
How often will the vehicle be used for towing?
What kind of driving will I want to use this for?
Do I have access to quality fuel and additives (DEF)?
Do I feel more comfortable working on one engine style?
We are happy to consult with you as you consider these questions and more when choosing a cab/chassis configuration for your buildout.
Important Considerations
Isuzu’s N series trucks all fall between class 3 (GVWR of 10,001–14,000) and class 5 chassis (GVWR of 16,001–19,500) meaning a CDL is not required to operate any RidgeRock Converted Cabover. Be aware that business vehicles with a GVWR of more than 10,001 pounds is subject to federal and state safety regulations for the safe operation of commercial motor vehicles and will require DOT number.
While the cabin comforts and overall design of the chassis remains largely the same, you may want to consider the ride quality of your chassis when loaded and unloaded. Every RidgeRock conversion includes tuning the rear spring pack to the truck and expected load on the rear axle. We cannot however increase the vehicles overall GVWR or entirely smooth out the ride of a dramatically underloaded truck. Call today to consult with a sales manager about your specific truck configuration.
Please reach out to info@ridgerockexpedition.com to learn more or to schedule your conversion today.
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