16 TONNES
22 TONNES
Otokar Atlas 15 chassis modification.
A longer chassis for long hauls. As an approved supplier of Otokar Otomotiv ve Savunma Sanayi A.Ş., we carry out Otokar Atlas 15 chassis modifications with a bodywork service under warranty.
Otokar Atlas 11 chassis modification.
Much longer, much stronger. For Otokar Atlas 11 chassis modifications, we handle the entire design, testing and certification process in-house.
Otokar Atlas 9 chassis modification.
No longer short — ready for longer loads. Otokar Atlas 9 chassis modification makes more efficient use of the vehicle chassis.
The NPR 3D is now 16 tonnes.
Additional axle and axle lift for the Isuzu NPR 3D and NQR 3D: from 12,500 kg to 16,000 kg. Same bearings, hubs and calipers as the drive axle.
The Atego is now 22 tonnes.
Mercedes Atego 1518 additional axle conversion: from 15,000 kg to 22,000 kg with an additional axle and chassis extension. Complete with a load- and speed-sensitive automatic axle lift system.
Since the day we were founded, we have been serving world-renowned automotive companies.
We increase your vehicle's capacity through engineering.
When we upgrade the capacity of your vehicles, we promise optimum performance without compromising on our high quality.
All services 01
OTOKAR
Otokar Truck and Commercial Vehicle Chassis Modification
Chassis modification for Otokar trucks and commercial vehicles. Bodywork service under warranty from an Otokar-approved supplier.
02
UP TO 22 TONNES
Additional Axle Conversion
By fitting an additional axle we increase your vehicle's net payload, and we do so using the original components used by the vehicle manufacturer.
03
15 → 22 TONNES
GVW Upgrade
We raise your vehicle's gross vehicle weight with an additional axle and chassis modification: from 15 to 22 tonnes on the Atego and from 12.5 to 16 tonnes on the Isuzu NPR 3D.
04
CHASSIS EXTENSION
Chassis Extension
We carry out chassis optimisation for greater loading capacity, optimum manoeuvrability and more efficient use of the vehicle chassis.
05
TFD AXLE
Axle Manufacturing
The additional axles we manufacture for 17.5" and 19.5" wheel sizes: 17.5" with disc or drum brakes, 19.5" with disc brakes.
06
SLEEPER CAB
Sleeper Cab Conversion
We create more living space inside the cab and add the sleeper berth that has become a necessity in today's conditions.
07
ISUZU NPR 10
Air Suspension Conversion
On request, we fit air suspension to your ISUZU NPR 10 vehicles.
08
OTOKAR · ISUZU · MERCEDES
Commercial Vehicle Homologation and Modification Services
Modification and post-modification homologation for Otokar, Isuzu and Mercedes commercial vehicles: tests, engineering documentation and the TSE application under one roof.
Modified vehicles take to the road.
Delivery photos of our Otokar Atlas, Isuzu and Mercedes Atego vehicles following chassis modification and additional axle installation.
View all deliveries
Same vehicle, more payload.
The figures below are taken from the technical specifications in our catalogues. Select your vehicle and see the difference.
NPR 3D and NQR 3D: now 16 tonnes
Additional axle and axle lift for the Isuzu NPR 3D and NQR 3D: from 12,500 kg to 16,000 kg. Our additional axle uses the same bearings, hubs and calipers as the vehicle's drive axle.
Atego 1518: from 15 to 22 tonnes
The Mercedes Atego 1518 additional axle conversion raises the gross vehicle weight from 15,000 kg to 22,000 kg. It includes an automatic axle lift mechanism operated by two buttons in the cab.
WE DESIGN TO THE NEED.
Six steps from analysis to delivery. Our processes are designed to interlock with the vehicle manufacturer's, which means maximum transparency and minimum lead time.
Market and Needs Analysis
We analyse the need against technology, market, regulatory and price criteria and define a realistic solution.
3D CAD Design
Design down to the smallest detail. Using 3D CAD speeds up the transition to series production and minimises design errors.
Risk Analysis
Sustainability, maintenance and after-sales considerations are built into the design, and risks are assessed rigorously.
Prototype and Road Testing
Our dedicated prototype team prepares the vehicle; durability and long-distance road tests are carried out with our GPS-linked test equipment.
Homologation
Tests are carried out with authorised technical services, the engineering documentation (project file) is prepared and an application for certification is submitted to TSE.
Delivery
The new configuration is programmed into the vehicle's ECU using our diagnostic equipment, and the vehicle is handed over.
As an approved supplier of Otokar Otomotiv ve Savunma Sanayi A.Ş., we provide a bodywork service under warranty.
Otokar chassis modification
A partner that thinks at the same strategic level as vehicle manufacturers.
Founded in Gebze, our company has served Anadolu Isuzu, Otokar and the defence industry since day one.
With a team of specialists in their field, we put optimisation at the heart of our solutions and continually expand and update our product range. Our first priority is to listen to our customers and to modify vehicles in line with their requirements.
- Otokar-approved supplier, bodywork service under warranty
- Original components used by the vehicle manufacturer
- Prototype design in 3D CAD
- TSE, TÜV-SÜD, VCA and SGS approvals
The team that designs, tests and certifies.
We invest in engineering without pause, continually improving our business processes and sharpening our expertise.
R&D and Product Development Projects
We use 3D CAD in our prototype designs to get results quickly, speed up the transition to series production and minimise design errors.
- Chassis and additional axle optimisation
- Cab modification
- Special vehicles
Homologation & Modification Services
For Otokar, Isuzu and Mercedes commercial vehicles, we handle both the modification and the certification that follows under one roof: preliminary tests, authorised technical service tests and the TSE application.
- Preliminary development tests
- Authorised technical service tests and reports
- Engineering documentation and TSE application
Defence Industry Projects
Since the day we were founded, we have served the defence industry as well as world-renowned automotive companies.
Defence industry projectsOur additional axles are made in-house.
On the additional axles we manufacture for 17.5" and 19.5" wheel sizes, we use the same bearings, hubs and calipers as your vehicle's drive axle, staying true to your vehicle's original design.
Exports from Gebze to five countries.
We export to Italy, Spain, Czechia, Uzbekistan and Russia.
ExportFull technical specifications are in our catalogues.
Isuzu NPR10 · NPR 3D · TORA All Modifications
Technical tables for additional axle and axle lift, chassis extension, truck-to-tractor conversion, axle manufacturing and sleeper cabs.
Download catalogue
Mercedes Atego Additional Axle Conversion
Mercedes Atego additional axle: 4160 KK, 4160 UK and 5360 UK dimension tables, automatic axle lift mechanism.
Download catalogueTechnical articles and guides.
The homologation process for vehicle modifications
Which tests does a modified vehicle undergo, how are the reports obtained and where is the application for certification submitted?
Isuzu NPR Tractor Unit 16T: technical specifications
Engine, gearbox, brake and weight specifications of the Isuzu NPR Tractor Unit 16T, designed for bulky but low-tonnage loads.
How does the automatic axle lift system work?
How is the axle lift mechanism controlled on vehicles with an additional axle, when can the axle be raised and when does the system lower it automatically?
Your questions, answered.
If you can't find the answer you're looking for here, write to us and our technical team will get back to you.
Ask usWe carry out chassis modifications on the Otokar Atlas 15, Atlas 11 and Atlas 9. As an approved supplier of Otokar Otomotiv ve Savunma Sanayi A.Ş., we provide a bodywork service under warranty.
The Isuzu NPR 3D and Isuzu NQR 3D are the main vehicles on which we carry out additional axle conversions. We also fit an additional axle and extend the chassis on the Mercedes-Benz Atego 1518.
We carry out preliminary tests with our own test equipment. The technical units affected by the modification are then tested together with authorised technical services and the test reports are obtained. The engineering documentation (project file) for the vehicle is prepared and an application for certification is submitted to TSE. All of these steps are carried out by our authorised in-house engineers.
We carry out the modification using the original components used by the vehicle manufacturer. On the additional axles we manufacture, the bearings, hubs and calipers are the same as those on the vehicle's drive axle.
The mechanism is operated by two buttons on the dashboard in the cab. When the vehicle is laden and travelling below 30 km/h, the additional axle can be raised to improve traction and manoeuvrability on slippery surfaces. Above 30 km/h, the additional axle lowers automatically.
Get more out of your transport resources.
Looking for a reliable partner with innovative solutions? Share your vehicle details and let's discuss the modification options that suit you.