October 21, 2026 Farhad Musazada

Kei Truck Upgrades: Lift Kits, Tires, Racks and Lights

By Farhad Musazada, owner of Skyline Kei Trucks. Last updated: October 21, 2026. Based on Texas Transportation Code chapters 545 and 547, TxDPS and TxDMV pages, and Suzuki, Honda and Subaru catalogs and releases; statutes and agency pages verified October 2026; suspension and tire figures from period catalogs (sources at the end). General information, not legal advice.

Key facts

Lift kits are leaf-spring hardware: Suzuki and Daihatsu kei trucks carry their load on rear leaf springs, so a lift means longer shackles, blocks between spring and axle or a spring-over conversion, plus spacers on the front struts.
No frame-height rule, but lamp heights apply: We found no lift or bumper-height limit in Transportation Code chapter 547. It does fix lamp heights: headlamps 24 to 54 inches (61 to 137 cm), taillamps 15 to 72 inches (38 to 183 cm).
Light bars stay off on public roads: No more than four lamps brighter than 300 candlepower may be lit on the front at once, and any other bright lamp must hit the road within 75 feet (23 m) (§547.302, §547.305).
Tint: 25 percent on the front side windows: Front side windows must pass at least 25 percent of light; the rear window is unrestricted if the truck has an outside mirror on each side (§547.613; Texas DPS).
Accessories come out of the payload: Everything bolted into the bed counts against the 350 kg (about 770 lb) load rating before you add cargo.

How does a lift kit work on a kei truck?

Start with what is under the truck. Suzuki's 1999 Carry catalog lists MacPherson struts in front and leaf springs at the rear, and the Daihatsu Hijet of the same years also rides on rear leaf springs. Honda's 1999 Acty uses a de Dion rear axle on leaf springs. The Subaru Sambar has a rear engine and four-wheel independent suspension, so a Sambar lift is spacers at all four corners. Among the kei SUVs, the Suzuki Jimny JA11 sits on leaf-sprung rigid axles and the JA12, JA22 and JB23 moved to coils. Our buyer's guide and the Jimny collection page cover the models.

That is why most kei truck lift kits are leaf-spring parts at the back and spacers at the front:

Longer shackles. The shackle is the short link at the rear end of the leaf spring. A longer one holds that end farther below the frame, so the frame rides higher and the spring tilts slightly, which moves the pinion angle a little.
Lift blocks. A block goes between the spring pack and the axle perch, with longer U-bolts; the axle sits farther from the frame by the height of the block.
Spring-over conversion. Where the spring pack sits under the axle tube, moving it on top raises the truck by the tube's diameter plus the perch height. It is the largest lift of the three and changes the pinion angle the most, so it is usually paired with shims.
Front spacers or taller springs. A spacer on top of the strut, or a longer coil, raises the nose to match; on a 4WD truck the front axle shafts then run at a steeper angle.

Any lift also points the headlamps higher. Texas requires a low beam that shows a person or vehicle 150 feet (46 m) ahead without projecting into an oncoming driver's eyes (§547.333), so re-aim them once the truck settles. Texas ended safety inspections for non-commercial vehicles, so the equipment rules are enforced on the road, not at a station (see our Texas title and registration guide).

Tires and wheels. The stock size on the 1999 Carry is 145R12 6PR LT, and the Hijet, Acty and Sambar of those years use the same 12-inch size; "6PR" is a six-ply rating, and the 350 kg (about 770 lb) load rides mostly on the rear pair, so keep any replacement's load index at or above the tire you take off. A taller tire lifts the truck by half of the extra diameter. Clearance at the fender, the rear spring and the front driveshaft is why taller tires and small lifts go together. Our FAQ covers where owners find parts.

What can you add to the bed, and what does it do to payload?

The Carry's catalog gives the bed as 1,940 mm long, 1,410 mm wide and 290 mm deep at the sides (76.4 by 55.5 by 11.4 in) with a 350 kg (about 770 lb) maximum load. The three sides fold down, which changes what fits:

Liners. A flat rubber mat or a spray-in coating keeps the drop sides working. A molded drop-in liner has to be made for a kei bed.
Racks. A headache rack behind the cab protects the rear window and gives a tie point for pipe, lumber and ladders; side-rail racks need to clear the drop sides.
Toolboxes. A cross-bed box has to fit inside the 1,410 mm (55.5 in) inner width, so it is a kei-size or compact-truck box.
Tarp frames and canopies. In Japan these trucks often carry a bow-and-canvas frame, called a horo (幌), that keeps rain off a load. Fiberglass and aluminum canopies make the bed a lockable box.

Now the arithmetic. The 350 kg rating covers everything the bed carries, accessories included. A canopy and a toolbox that together weigh, say, 60 kg (132 lb) leave 290 kg (639 lb) for cargo. Our FAQ has more on payload, and our deer lease guide covers loads by weight.

Which lights can you add, and which can be on in traffic?

Chapter 547 names the lamps a motor vehicle may carry and caps most of them at two (§547.302 says when they must be lit).

Lamp	How many	Where it mounts	Section
Headlamps	At least two, one each side	24 to 54 in (61 to 137 cm)	§547.321
Auxiliary driving lamps	Up to two	Front, 16 to 42 in (41 to 107 cm); with the high beam	§547.330
Fog lamps	Up to two	Front, 12 to 30 in (30 to 76 cm), aimed low	§547.328
Spotlamps	Up to two	Beam may not hit another vehicle's glass, mirrors or occupants	§547.327
Taillamps	At least two, red, visible from 1,000 ft (305 m)	Rear, 15 to 72 in (38 to 183 cm)	§547.322

Two rules decide what an LED light bar can do on the road. No more than four lamps brighter than 300 candlepower may be lit at once on the front of a vehicle, headlamps included (§547.302). And a lamp that is not a headlamp, spotlamp, auxiliary lamp or signal and is brighter than 300 candlepower must be aimed so its high-intensity beam strikes the road no more than 75 feet (23 m) away (§547.305). A multi-LED bar is neither a named lamp type nor under 300 candlepower. Use it on the ranch or lease; on a public road it stays off.

Color matters too. A lighting device on the rear must be or reflect red unless the chapter says otherwise (§547.303), so a white work light aimed into the bed is for the job site, not for driving. No red light may show from the front, and red, white or blue beacons or flashing lights are off limits on a vehicle not authorized for them, switched on or off (§547.305).

What does Texas say about tint, exhaust and mud flaps?

Window tint. Transportation Code §547.613 and the Texas DPS tinting standards set the limits. Front side windows must let through at least 25 percent of light and reflect no more than 25 percent. The rear window has no limit if the vehicle has outside mirrors on both sides that show the road 200 feet (61 m) behind. The installer must put a label reading "Complies with TTC 547.613 (b)" in the bottom rear corner of the driver's window.

Exhaust. A motor vehicle must have a muffler in good working condition that continually operates to prevent excessive or unusual noise, and no cutout or bypass (§547.604). A muffled aftermarket system is inside the rule; a straight pipe is not.

Mud flaps. Texas requires flaps on trucks and trailers with at least four tires, or two wide super-single tires, on the rearmost axle (§547.606). A kei truck has two rear tires, so the rule does not reach it. Flaps are still worth fitting for caliche and gravel.

Can you tow with a kei truck, and what about winches and bumpers?

The Japanese catalogs we work from give no towing capacity for these trucks. The 350 kg figure is a bed load rating, not a tow rating, and we make no claims about what a kei truck can pull. If you do tow in Texas, the trailer has its own paperwork: TxDMV requires registration for every non-farm trailer on a public highway, and a manufactured trailer over 4,000 lb (1,814 kg) gross weight must also be titled.

A winch adds weight ahead of the front axle and needs a mount tied to the frame, plus wiring and a battery sized for the motor. A steel bumper must leave the headlamps at their legal height and the turn signals and reflectors in view. We found no bumper-height rule in chapter 547, but the lamp rules still apply.

Radio, A/C, heater and seats: what can be improved inside?

Radio. A Japanese-market radio was built for Japan's FM band, which does not line up with the U.S. band of 88 to 108 MHz (47 CFR §73.201), so a stock head unit finds few or no Houston FM stations. The fixes are a band expander, a small converter in the antenna lead, or a replacement head unit.

Air conditioning. A/C was a factory option on many 1990s versions rather than standard: Suzuki's 1999 Carry catalog lists separate weights for KA trucks with A/C, and Honda's May 1999 release lists a manual air conditioner as an extra-cost option on the new Acty. Ask us what a specific truck has before you buy, heater included; we will tell you what we see.

Seats. If you change the seats, keep the factory belts and anchor points working: Texas requires everyone 15 and older to be belted in a seat that has a belt (Transportation Code §545.413).

Frequently asked questions

Is a lifted kei truck legal in Texas?

Chapter 547 sets no frame or bumper height. What still applies after a lift is the lamp heights in the table above and a low beam that lights 150 feet (46 m) of road without dazzling oncoming drivers (§547.333). Our guide on kei truck legality in Texas covers titling and road use.

Can I drive with my light bar on?

Not on a public road. Texas caps the lamps brighter than 300 candlepower lit at once on the front at four, headlamps included, and any other lamp that bright must hit the road within 75 feet (23 m) (§547.302, §547.305).

How dark can I tint a kei truck in Texas?

Front side windows must pass at least 25 percent of light. The rear window has no limit as long as the truck has an outside mirror on each side, and the windshield may only be tinted above the AS-1 line or the top 5 inches (12.7 cm) (§547.613; Texas DPS).

Does a rack or toolbox cut into what I can carry?

Yes. The 350 kg (about 770 lb) load rating covers everything in the bed, accessories included. Weigh what you bolt on, subtract it, and the rest is cargo.

Sources

Written by Farhad Musazada, owner of Skyline Kei Trucks

Farhad imports more than 300 kei trucks a year to Houston and meets buyers at the lot at 6100 Harvey Wilson Dr. He writes these guides from the paperwork our buyers take to the county tax office and the official sources listed on each page. Spotted something out of date? Email us and we will check it.

Ready to look? Browse kei trucks for sale in Houston, see what is in Houston now or arriving soon, or call or text (713) 385-9798.

All vehicles are sold by Wideway Motors LLC as is, with no warranty.