Home > SINOTRUK Chassis for Concrete Mixer Trucks — 6–14 m³ Workhorse

SINOTRUK Chassis for Concrete Mixer Trucks — 6–14 m³ Workhorse

The SINOTRUK chassis is the workhorse lower-part option in the TRUEMAX concrete mixer truck range — the road platform that carries the medium and large CTM drums to site. Built on SINOTRUK chassis models ZZ1257N3841W/B1 and ZZ1317N3261W/B1 with the WP10 series engine in either 340 kW or 380 kW form, it covers the entire mainstream capacity band from 6 m³ to 14 m³ drums (compatible with TRUEMAX CTM6, CTM8, CTM9, CTM10, CTM12 and CTM14 upper parts) and is available in 6×4 or 8×4 drive configurations, with tail-gas emissions specifications from Euro II through Euro V to suit different export markets.

That breadth is what makes the SINOTRUK chassis the default choice for most ready-mix (RMC) operators and construction contractors. The two engine ratings give a power-band match across the loaded range — 340 kW is generally specified with the lighter 6–10 m³ drums, while 380 kW gives margin for the heaviest 10–14 m³ loads and hilly terrain. The 6×4 configuration suits the 6–10 m³ class on the ZZ1257 chassis; the 8×4 four-axle layout on the ZZ1317 chassis is built for the heavier 10–14 m³ drums and the rated load up to 50,000 kg. Cab equipment includes seat with air bag and air conditioning as standard, and TRUEMAX supports custom chassis builds where local-market requirements demand changes. The chassis is built and tested at the TRUEMAX factory in Haining, supplied with the same full after-sales programme — three-minute response, 24-hour solutions, remote intelligent service — within a line exported to more than 120 countries.

1. WP10 engine in 340 kW or 380 kW — WP10.340E22 and WP10.380E22 ratings of the Weichai WP10 engine — proven in Chinese-built heavy commercial vehicles for high torque at the low end of the rev range, which is what a loaded mixer truck pulling away from a site needs.

2. Euro II to Euro V emission options — Tail-gas emission can be specified anywhere from Euro II to Euro V, matching the regulatory band of your destination market. Euro V is available for markets that require it; Euro II remains the right pick for many emerging-market fleets where it is current spec.

3. 6×4 or 8×4 drive — Two drive layouts cover the capacity range. 6×4 (ZZ1257 chassis) suits the 6–10 m³ drum class with sensible kerb weight and manoeuvrability. 8×4 (ZZ1317 chassis) brings a four-axle layout for the heaviest 10–14 m³ drums and rated load to 50,000 kg — better load distribution and braking on the bigger loads.

4. Carries CTM6 to CTM14 drums — Designed to take the whole mainstream range of TRUEMAX upper-part drum models — CTM6 (9.6 m³ geometric / 6 m³ payload), CTM8, CTM9, CTM10, CTM12 and the largest CTM14 (20.4 m³ geometric / 14 m³ payload). One chassis platform, six drum sizes.

5. Built for 90 km/h highway running — Maximum travel speed of 90 km/h with 11.00–12.00 R20 truck tyres — sized for sustained motorway and trunk-road running between batching plant and pour, not just short site shuttles.

6. Air-bag seat and air-conditioned cab as standard — The cab comes with an air-bag driver's seat and air conditioning fitted as standard equipment — driver-comfort items that matter on the long shifts a mixer truck typically works.

7. Customisable chassis specification — Beyond the standard build, the chassis can be customised on request — different transmission, axle ratio, fuel-tank size, regional homologation kit and so on. Tell us the destination market and duty cycle and we will configure accordingly.

8. Backed by TRUEMAX one-stop service — Pre-sale technical consultation, on-site commissioning of the mixer-and-chassis assembly, operator and driver training, three-minute response time on service queries, 24-hour solutions on issues, and a remote intelligent service and self-diagnosis system across the working life.

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Technial Parameters

Item	Unit	SINOTRUK Chassis (Workhorse)
Vehicle Identification
Vehicle Model	/	SINOTRUK
Chassis Model	/	ZZ1257N3841W/B1, ZZ1317N3261W/B1
Engine & Emission
Engine Model	/	WP10.340E22 / WP10.380E22
Engine Power	kW	340 / 380
Tail Gas Exhaust Standard	/	EURO II – EURO V
Drive & Load
Drive Type	/	6×4 / 8×4
Rated Load	kg	15,000 – 50,000
Max. Travel Speed	km/h	90
Wheels & Wheelbase
Tyre Type	/	11.00 – 12.00 R20
Wheelbase	mm	3825+1350 / 1800+3200+1350
Drum Compatibility & Dimensions
Applicable to Concrete Truck Mixer	m³	6 – 10 / 10 – 14
Overall Dimension (L × W × H)	mm	9020 × 2496 × 3835 / 10611 × 2496 × 3990
Total Weight (with mixer drum)	kg	12,500 – 16,000
Cab & Customisation
Cab	/	Seat with air bag, air conditioner
Customisation	/	Other chassis can be customised on request

Dimensions & Working Range

The SINOTRUK lower part is supplied to TRUEMAX as bare chassis-cab, on which the matched upper part (drum, sub-frame, hydraulic system, water tank and discharge chute) is built up in the TRUEMAX factory. Overall vehicle dimensions depend on which drum size is fitted: 9,020 × 2,496 × 3,835 mm with a 6 m³ drum on the 6×4, rising to 10,611 × 2,496 × 3,990 mm with a 14 m³ drum on the 8×4. Total laden weight (chassis + filled drum + cab equipment) sits between 12,500 kg and 16,000 kg across the range. Read the chassis dimensional drawing together with the drum-fit table when planning gate clearances and turning circles at the batching plant and on the site.

Applications

The SINOTRUK chassis is the lower-part platform for the great majority of TRUEMAX mixer-truck supplies — the mainstream-capacity ready-mix workhorse rather than the small entry truck or the heavy-haul flagship.

Commercial ready-mix (RMC) fleets

Commercial RMC operators run mixed fleets of 6–14 m³ trucks across a city or region. The SINOTRUK chassis, in 6×4 or 8×4 form, covers the whole mainstream capacity with one chassis brand and one engine family — simpler parts inventory and driver familiarisation than mixed-brand fleets.

Highway, bridge and infrastructure projects

Major highway, expressway and bridge construction draws heavily on 8 m³ to 14 m³ mixer trucks for the journey between site batching plant and pour. The 90 km/h sustained speed and the load capacity of the 8×4 ZZ1317 chassis are sized to exactly this work.

Building and structural concrete delivery

Building and structural pours on city sites tend to favour the 6 m³ to 10 m³ end of the range — easier to manoeuvre in urban streets and at building-site gates, while still delivering enough concrete per trip to keep the pour moving. The 6×4 ZZ1257 chassis fits this work well.

Export to Euro II – Euro V regulatory markets

Because the chassis is offered across the Euro II to Euro V emission band, TRUEMAX can supply into developed markets that require Euro V and into emerging markets where Euro II remains the typical specification — without changing the chassis platform or operator training.

FAQs

What is the SINOTRUK chassis option, and how does it differ from the other TRUEMAX chassis choices?

It is the mainstream-capacity lower part of the TRUEMAX concrete mixer truck — built on SINOTRUK ZZ1257 (6×4) or ZZ1317 (8×4) chassis with a WP10 engine in 340 kW or 380 kW form, carrying drums from 6 m³ to 14 m³. TRUEMAX offers two other chassis options below and above it: the SINOTRUK-HOWO 7 ZZ5128 4×2 light chassis for 3–5 m³ drums (city and entry-tier work), and the SINOTRUK-HOWO N7 ZZ1317N466JE1 8×4 Euro V flagship for 12 m³ work at 100 km/h with the MC11 440 kW engine. All three are SINOTRUK group platforms; the mainstream SINOTRUK chassis on this page covers the broadest range.

WP10.340E22 or WP10.380E22 — which engine rating should I choose?

The 340 kW rating is the cost-effective pick for 6–10 m³ drums on the 6×4 chassis in mostly-flat terrain. The 380 kW rating gives margin for the heaviest 10–14 m³ drums on the 8×4 chassis, for hilly country, and for fleets that want extra power reserve for long uphill grades fully laden. Both are Weichai WP10 engines on the same chassis line, so the choice does not change parts inventory significantly.

6×4 or 8×4 — which drive should I specify?

6×4 (three axles, the ZZ1257 chassis) is the right pick for the 6–10 m³ drum class — lighter kerb weight, more manoeuvrable in urban traffic and at building-site gates, and a sensible match to the moderate loads. 8×4 (four axles, the ZZ1317 chassis) is the choice for the heaviest 10–14 m³ drums where the rated load reaches 50,000 kg — the additional axle spreads the load, helps braking and complies with axle-load regulations in many markets.

Can it meet Euro V emission standards?

Yes. The SINOTRUK chassis is offered across the Euro II to Euro V band, so it can be specified to whatever emission standard the destination market requires. We will configure the engine, after-treatment and fuel system to the chosen standard.

Which TRUEMAX drum sizes will fit this chassis?

The SINOTRUK chassis is compatible with TRUEMAX upper-part models CTM6 (9.6 m³ geometric / 6 m³ payload), CTM8 (11.8 m³ / 8 m³), CTM9 (14.4 m³ / 9 m³), CTM10 (14.4 m³ / 10 m³), CTM12 (18.4 m³ / 12 m³) and CTM14 (20.4 m³ / 14 m³). The 6×4 ZZ1257 chassis typically pairs with CTM6–CTM10; the 8×4 ZZ1317 chassis carries CTM10–CTM14. See the combined upper-part product page for drum-side specifications.

Can other chassis brands be supplied if our project specifies them?

Yes — TRUEMAX builds mixer trucks on chassis brands beyond SINOTRUK where the project requires it, including FAW, Shacman, Dongfeng and others. The product brochure offers SINOTRUK as the standard option; alternative chassis are supplied on request and quoted to your specification. Tell us the destination, regulatory environment and any fleet-commonality requirements you have.

What is included in the cab as standard, and what can be customised?

Standard cab equipment is an air-bag driver's seat and air conditioning. Beyond that, transmission and axle-ratio selection, fuel-tank size, electrical and lighting kit for the destination market, regional homologation requirements and decals are all customisable. Tell us what your market needs and we will build to it.

What after-sales support comes with the chassis-and-mixer assembly?

TRUEMAX provides the chassis and the matched upper part as one assembled vehicle, with one warranty and one after-sales channel. Pre-sale consultation, on-site commissioning of the assembled truck, driver and operator training, three-minute service response, 24-hour solutions, plus a remote intelligent service with self-diagnosis. For engine-specific warranty, SINOTRUK and Weichai's service network operates in most TRUEMAX export markets.

Where the SINOTRUK chassis sits in the TRUEMAX mixer-truck range

TRUEMAX builds concrete mixer trucks on three SINOTRUK group chassis platforms, each pointed at a different capacity band. The light entry-tier platform — SINOTRUK-HOWO 7 ZZ5128F3915, 4×2, 102 kW, Euro II — carries 3 to 5 m³ drums for small-truck city work. The mainstream platform shown on this page — SINOTRUK ZZ1257 (6×4) or ZZ1317 (8×4), 340/380 kW, Euro II–V — carries 6 to 14 m³ drums for general RMC and infrastructure delivery. The heavy flagship — SINOTRUK-HOWO N7 ZZ1317N466JE1, 8×4, 440 kW, Euro V — is built for 12 m³ drums on long, fast routes, with the higher 100 km/h top speed. Together the three chassis cover the entire payload range from 3 m³ to 14 m³.

How chassis selection works in the TRUEMAX upper-and-lower architecture

A TRUEMAX concrete mixer truck is sold as a finished vehicle, but engineered as two parts: the lower part (chassis) and the upper part (drum, sub-frame, hydraulic drive, water tank and chute). The upper part is selected by payload — CTM3 to CTM14 — and the chassis by what is needed to carry that drum legally, fast enough and into the right emissions and market environment. For a typical 8 m³ RMC truck in a Euro II market, that is a CTM8 drum on a 6×4 ZZ1257 chassis with WP10.340E22; for a 12 m³ truck on motorways under Euro V, it is a CTM12 drum on the 8×4 ZZ1317 chassis with WP10.380E22 or the HOWO N7 alternative. The combined upper-part product page documents the drum side.

Why SINOTRUK is the default mixer-truck chassis brand

SINOTRUK (中国重汽) is China's largest heavy-commercial-vehicle producer and the chassis brand most widely deployed in export concrete mixer trucks. Two practical reasons matter for operators. First, parts and service: SINOTRUK and its Weichai engines have service networks in virtually every TRUEMAX export market, which keeps the fleet running. Second, the platform's breadth: the ZZ1257 / ZZ1317 / HOWO N7 ladder spans the whole capacity range without forcing the operator to learn three unrelated chassis brands. For an RMC fleet running 30 trucks across two or three sizes, SINOTRUK is the chassis that minimises operating complexity.