Wholesale Aftermarket Parts & Accessories for ATV/UTV, Off-Road
Whether the rig is picking its way over rock ledges or running open dune, the parts that decide how it behaves are the ones carrying load and controlling articulation. SYZ Machine supports those load-bearing and articulation-critical parts — control arms, heim joints, ball joints, high steer arms, track bars, spacers and armor — for Jeep, Bronco, Tacoma, ZR2, TRX, Defender and beyond through one manufacturing and QC program.
Off-road vehicles are purpose-built for terrain that would stop a normal car — longer-travel suspension, higher ground clearance and specialised tyres let them work through rock, mud and broken ground rather than around it. That capability is exactly what loads the parts we make.
TJ, LJ, JK and JL. Our deepest 4×4 coverage — adjustable flex arms, track bars, drag links, 1.25″ Johnny joints and HD bumpers all exist as production tooling.
Independent front end, solid rear. Demand concentrates on upper control arm joints, sway bar disconnects and spacer fitments rather than long links.
A long-lived platform with a mature parts market. Uniballs, upper arms, rod ends and hub-centric spacers are the steady movers.
Full-size truck loads mean heavier sections. Ball joints and steering hardware get sized up rather than carried across from the mid-size lines.
High-power, high-speed desert use. Joint strength and fatigue life matter more here than articulation angle — the failure mode is repeated impact, not bind.
Expedition and rally duty alike. See what the Defender D7X-R runs for Dakar for how far the platform gets pushed.
A pickup that dominates in Australia, Africa and Southeast Asia. Steering and suspension wear items carry most of the replacement volume.
Lighter-duty and rally-flavoured. Precision joints and linkage hardware matter more than brute section size.
These are the platforms we are asked for most, not a limit. Send the vehicle and the part and we will confirm — contact us to inquire about additional models.
A note on fitment: confirm by the part, not by the model year. Manufacturers change joint tapers, bore sizes and thread pitches mid-generation, so a year alone is not enough to quote against. Send the OE part number, a drawing, or clear photos of the existing part with a measurement reference and we will confirm before pricing. Every product page on our site also carries its own compatibility detail.
“Off-road” is not one market. A rock buggy, an overland truck, a desert racer and a trail-driven daily all load their suspension differently — and buy different parts as a result. Knowing which one your customers are is the fastest way to decide what to stock.
Low speed, extreme articulation, huge static loads. The suspension has to keep tyres on the ground through full compression and droop without binding, which puts everything on the joints. Our rock crawler build guide covers the geometry side properly.
Loaded, far from help, and driven for weeks at a time. Predictability and service life beat peak performance — parts have to stay quiet and stay together. There is a reason most overland rigs run parallel 4-link rather than anything more exotic.
High speed over repeated impact. Fatigue life is the constraint, not static strength, and a rig that steps sideways under load costs the driver confidence long before it breaks anything. Worth reading alongside how to prevent off-road rollovers.
The largest volume by far. A mild lift, decent tyres and weekends on the trail — but a lift changes geometry, and geometry that is left uncorrected shows up as wander and uneven tyre wear. Our breakdown of 3-link, 4-link and 5-link Wrangler setups is the usual starting point.
The common thread: lifting a truck moves the tie rod and control arm onto different arcs, and the toe angle starts changing every time the suspension cycles. That is bump steer, and it is the single most common complaint after a lift. Adjustable ends, correct-length links and misalignment spacers are what fix it — the detail is in how to avoid bump steer.
Ten families across the five groups the catalogue is organised by — suspension, steering, drivetrain, parts and accessories. Mixed suspension, steering, drivetrain, parts and accessory programs can be quoted, customized, inspected and shipped through one SYZ-managed supply workflow.
Adjustable and fixed, tubular steel or CNC billet. Complete 8-arm flex kits re-centre the axle and let you dial pinion and caster angle; anodised 6061-T6 clamp collars lock the rod ends after adjustment, and powder coat over zinc primer handles the corrosion side. Welded arms start at 50 sets, CNC billet at 10–20.
4130 chromoly housings with 52100 bearing steel balls, hard chrome or zinc plated. Forged Johnny joints are rebuildable rather than replaceable — the reason they end up in control arms that see mud for a living. The 1.75″ series is built for monster truck and 4-link loads; kits ship with tube adapters, spacers and jam nuts.
4130 chromoly as standard with 4340 and 300M available where loads justify it, CNC machined and finished in yellow or silver zinc. Adjustable and fixed versions both exist. On lifted trucks the upper joint is usually what limits things first, which is why the F150 upper is one of our steadiest lines.
High steer arms CNC machined from solid 6061-T6 or 7075-T6 billet for Dana 44 knuckles, with steel versions and custom hole spacing on request. Jeep JK drag links in 7075-T6 aluminium — stiffer in bending than steel at lower mass. Tie rod ends come greased and sealed from the factory, so they go on and stay serviced.
Adjustable track bars in 4130 chromoly, aluminium or titanium, CNC machined with precision threads — they put the axle back under the vehicle after a lift instead of leaving it offset. Radius rods run 6061 and 7075 billet in high-clearance profiles for long-travel builds.
Aluminium and steel stabiliser links in fixed, adjustable and disconnect styles. A lift leaves the factory link too short and the bar preloaded, which quietly costs articulation before the driver ever notices — longer or adjustable links give it back. Twenty catalogue variants, plus made-to-length.
Metal-to-metal and PTFE-lined, in carbon and stainless steel, plus high-misalignment versions for arms that cycle through big angles. This is where an IFS truck upgrade usually starts — a uniball in place of the OE bushing removes deflection under load, which is precisely what you feel as vague steering.
Threaded coilover sleeves and collar sets, shock eyelets and top mounts, piston rods, bump stops and tender springs. We already build these to functional tolerance for shock manufacturers, so an off-road brand assembling its own damper gets the same parts as the OEM programs rather than a catalogue substitute.
Hub-centric spacers and bolt-pattern adapters machined to ±0.02mm with Grade 12.9 studs, anodised in any colour you want to brand. Also U-joints, prop shaft end yokes and sealed wheel bearings. If you are unsure on sizing, what a wheel spacer actually does is the clearest explanation we have.
Front and rear HD bumpers in A3 carbon and manganese steel, black powder coated, cut with large approach angles rather than styled to look like it. All-steel running boards for JL 2- and 4-door, plus nerf bars, skid plates and light bar mounts. Logos, coatings and dimensions are all open to OEM/ODM change.
Related hardware available: weld-in tube adapters, hex and square bungs, jam nuts, limit straps, control arm bushings and throttle linkage kits — the hardware a link build actually needs but that rarely makes it into a product listing. If you are ordering arms or joints, ask for these on the same line rather than sourcing them separately.
Four things that decide whether an off-road part is worth stocking — and what we actually do about each of them.
Material grade is specified for the job, not for the price list: 4130 and 4340 chromoly for housings and joints, 300M where loads justify it, 7075-T6 for links that need stiffness at low mass, 52100 bearing steel for the balls. Hard chrome, zinc and anodised finishes handle the mud and salt that follow.
Everything is CNC machined to drawing, and fitment is confirmed against the part rather than assumed from a model year. On a chassis, a part that fits “nearly” is a part that binds — which is why we would rather see your OE sample before quoting than after the first container lands.
Suspension, steering, drivetrain, parts and accessories all come out of the same building — 19 CNC machines, 12 lathes, grinding, threading, milling and injection under one roof. A mixed order consolidates into one shipment with one set of paperwork and one point of contact.
Our engineers help you pick the right part and get it installed correctly, from thread and bore selection through to misalignment spacers and torque. Prototypes are typically ready in 4–6 weeks, and the same team stays on the account after the order ships.
The commercial questions every buyer asks first, answered up front rather than after three emails.
Our standard minimum is 50 pieces or a $500 order value, and it flexes by line — welded arms from 50 sets, CNC billet arms from 10–20 sets, and single pieces on some catalogue items. Tell us the family and target volume and we will give you the specific figure.
Standard terms are a 30% deposit with the 70% balance before shipment. Flexible terms can be discussed for long-term partners once there is a working relationship — we would rather earn that than advertise it.
Free stock samples are available for dimension and material checking, and custom sample cost is negotiable — typically refunded once the production order is placed. Check the part on your own vehicle before you commit to a container of them.
We work from drawings, samples or an OE part. Materials, dimensions, thread and bore sizes, surface treatment, anodise and powder coat colours are all yours to specify, with laser engraving or stamping for logos, part numbers and batch codes.
Raw material inspection on the way in, in-process control during production, and final inspection before packing. We run dynamometer and pull testing in-house, and material certificates, hardness reports and dimensional records are available on request.
We ship to more than 20 countries, with cost and transit time varying by destination. Our team handles export documentation, and packaging can be neutral, branded or retail-ready so stock arrives shelf-ready rather than needing repacking.
Certified and audited: the factory is certified to ISO 9001 with SGS verification, with warranty terms confirmed by product line and order scope. The documentation your own customers ask for already exists rather than needing to be arranged after the fact.
We manufacture and customise off-road parts and accessories. Contact us for catalogues, technical support or a custom solution.
Send the platforms you cover, the families you want quoted and your target quantities. OE part numbers speed things up, but a drawing or clear photos of a sample work just as well — reverse engineering is routine here.
Our engineers confirm material, thread, bore and fitment against the actual part, then send a factory quote within 24 hours along with the catalogue so you can see the rest of the range while you decide.
Sample approval, production under three-stage inspection, branded packaging and export documentation. Before or after the sale, the same engineers and sales team stay on your account.
Request the off-road parts catalogue and a factory quote — answered within 24 hours.
Feedback from buyers and builders running our parts on their own vehicles.
“The suspension upgrade I purchased transformed my Jeep into a trail beast. Excellent quality and fit!”
“I love the custom lighting kit. It not only looks great but also improves visibility during night rides.”
“The skid plates I bought have protected my truck from numerous obstacles. Worth every penny.”
“Fantastic customer service. They helped me choose the right parts for my Toyota Tacoma.”
“Fast shipping and top-notch quality. My Land Rover Defender is now ready for any adventure.”
What buyers and builders ask most often before opening an account.
Jeep Wrangler, Ford Bronco, Toyota Tacoma TRD Off-Road, Chevrolet Silverado ZR2, Ram TRX, Land Rover Defender, Nissan Navara and Mitsubishi Outlander (Ralliart) — and many more beyond that list. Wrangler is our deepest coverage, with TJ, LJ, JK and JL tooling already in production. If your platform is not listed, send a sample or drawing and we will confirm whether we can build it.
Five groups. Suspension — control arms, track bars, radius rods, sway bar links, coilover hardware, ball joints. Steering — tie rod ends, drag links, high steer arms, rack ends. Drivetrain — wheel spacers and adapters, U-joints, end yokes, wheel bearings. Parts — heim joints, rod ends, Johnny joints, spherical bearings, tube adapters and bungs. Accessories — bumpers, nerf bars, running boards, skid plates, light bar mounts. Each is built for a different need, so a rig can be sourced completely from one supplier.
50 pieces, or a $500 minimum order value. It flexes by line — welded control arms start at 50 sets, CNC billet arms at 10–20 sets, and some catalogue items go down to a single piece. Terms can be adjusted to suit your situation, so tell us the family and target volume and we will give you a specific figure.
Standard terms are 30% deposit and 70% balance before shipment. We also offer flexible terms for long-term partners — reach out and we will discuss what fits your ordering pattern.
Every product page carries its own compatibility detail, so start there. Beyond that, confirm by the part rather than the model year — joint tapers, bore sizes and thread pitches change mid-generation and a year alone is not enough to quote against. Send an OE part number, a drawing, or photos of the existing part with a measurement reference and our support team will confirm it before you order.
Yes — we ship worldwide and currently serve customers in more than 20 countries. Cost and delivery time vary by destination and we handle export documentation ourselves. Contact us with your port and quantities for specific shipping options and rates.
Yes. Laser engraving or stamping for logos, part numbers and batch codes, plus custom anodise and powder coat colours and neutral, branded or retail-ready packaging. MOQ on customised products may differ from catalogue items, so tell us the requirement and we will quote it specifically.
Production batches follow three control stages: raw material inspection, in-process control during production, and final inspection before packing. We run dynamometer and pull testing in-house, the factory is certified to ISO 9001 with SGS verification, with warranty terms confirmed by product line and order scope. Material certificates, hardness reports and dimensional inspection records are available on request.
Inspect and clean regularly, and do not let mud and grit build up around the joints — that is what turns a sealed bearing into a grinding one. Keep an eye on suspension, tyres and drivetrain condition after hard runs. One caveat worth knowing: PTFE-lined rod ends should not be greased, since grease traps abrasive grit against the liner. Rebuildable Johnny joints, by contrast, are designed to be serviced. Maintenance guides are available for certain products.
Yes, and it is how most of these lines began. Send a physical OE sample, a drawing, or just the target platform, and our engineers will reverse-engineer it, confirm material and finish, and quote the program. Prototypes are typically ready within 4–6 weeks before mass production.
Through the form on this page, by email at [email protected], by phone on 0086-21-34689886, or via the live chat on our website. Whether you need help selecting the right part or have an after-sales issue, we are here — support runs 24/7 and quotes are targeted within 24 hours.
Let’s build your solution together. We specialise in manufacturing and customising off-road parts and accessories — contact us for product catalogues, technical support or a custom solution. Rm.701, No.23, Lane 466, YinDu Rd. SH, CN · 0086-21-34689886 · [email protected]
