Tired of guessing tire pressure on your duals? Underinflated tires waste fuel, wear out faster, and can sideline your truck. Overinflation is no better. You need a set-and-forget way to keep both tires equalized and in the safe zone.
In this quick guide, we review the best Cat’s Eye tire pressure systems for dual trucks and trailers. From 100 to 120 PSI, and 2-packs to 4-packs, use the table below to find the right kit for your load and fleet size—then check today’s price with one click.
| Product Image | Product Name | Best For | Check Price |
|---|---|---|---|
 | Cat’s Eye 110 PSI Dual Truck 2-Pack | Daily fleet maintenance | Check Price |
 | Cat’s Eye 110 PSI Dual Truck 4-Pack | Equipping multiple trucks | Check Price |
| Cat’s Eye 100 PSI Dual Truck 2-Pack | Light-duty duals | Check Price |
| Cat’s Eye 105 PSI Dual Truck 2-Pack | Mid-range pressures | Check Price |
| Cat’s Eye 120 PSI Dual Truck 2-Pack | Heavy towing demands | Check Price |
 | Cat’s Eye 120 PSI Dual Truck 4-Pack | Fleet-wide heavy loads | Check Price |
 | Cat’s Eye 110 PSI Dual Trailer 2-Pack | Spare or replacement kit | Check Price |
In-Depth Product Reviews
Cat’s Eye 110 PSI Dual Truck 2-Pack
Perfect for heavy-duty truck owners and RVers who want a quick, visual way to keep dual tires at 110 PSI without constant manual checks.
The Cat’s Eye system equalizes pressure between duals and uses a green/yellow indicator so you know status at a glance. In practice, if one tire loses a few PSI overnight, the system balances both and the “eye” turns yellow, reminding you to top up when convenient. Even better, you check and inflate both tires from a single valve, which saves time at every stop.
Built for real-world abuse, the hoses and housing are rugged and weather-resistant, and the internal check valve isolates a rapid leak so one bad tire won’t take out its mate. This 2-pack covers both sides of one axle, making it a smart, complete upgrade for dual-wheel trucks that want longer tread life, better stability, and fewer tire headaches.
Pros:
- 👍 At-a-glance green/yellow indicator simplifies daily checks.
- 👍 Equalizes duals and lets you inflate both from one point.
- 👍 Check valve helps protect against losing both tires in a blowout.
- 👍 Calibrated for 110 PSI—ideal for heavy-duty trucks and fleets.
Cons:
- 👎 Installation takes some routing and securing of hoses.
- 👎 Indicator shows status, not exact PSI—you’ll still use a gauge.
- 👎 Fixed 110 PSI setting isn’t ideal if your spec differs.
Cat’s Eye 110 PSI Dual Truck 4-Pack
Perfect for fleet managers, RV owners, and heavy‑duty drivers who want a set‑and‑forget way to keep dual tires matched at 110 PSI.
The Cat’s Eye system automatically equalizes pressure between both tires on a dual, so they wear evenly and track better. The visual “eye” makes checks instant—you’ll spot a low pair at a glance during walk‑arounds. Example: if one tire drops a few PSI overnight, the indicator flags it, and you can use the single fill point to bring both tires back to spec in seconds.
Built for the long haul, it uses rugged components and check valves that isolate a rapid loss, so one flat won’t take its mate down. The 4‑pack covers two dual axles, making it a smart buy for tandems on tractors, box trucks, or large motorhomes. If you want fewer headaches, longer tire life, and quick inspections, this 110 PSI kit is a strong, proven choice.
Pros:
- 👍 Automatic equalization keeps duals at the same pressure for better handling and tire life.
- 👍 At‑a‑glance visual indicator speeds up pre‑trip inspections.
- 👍 Single fill point inflates both tires together and saves time.
- 👍 Check valves help protect the companion tire during a rapid leak.
- 👍 4‑pack conveniently outfits two dual axles.
Cons:
- 👎 Installation takes time to route hoses and mount hardware.
- 👎 Extra hoses add complexity and can be vulnerable if abused off‑road.
- 👎 110 PSI spec may be overkill for lighter-duty setups.
Cat’s Eye 100 PSI Dual Truck 2-Pack
Perfect for fleet managers, RVers with tag axles, and dually pickup owners who want balanced dual tires and quick visual checks without electronics. The Cat’s Eye 100 PSI Dual Truck 2-Pack keeps both tires in a pair at the same pressure and shows you at a glance when you’re in the safe zone.
The star feature is single-point inflation and automatic equalization at 100 PSI. Both duals share air to stay matched, so one tire never secretly carries the load. That means even wear, cooler running, and fewer roadside surprises. Example: if one tire drops 5 PSI overnight, the system equalizes the pair and the indicator tells you it needs attention.
Built for work. The hoses, check valves, and sturdy bracket handle vibration, grime, and weather. In a rapid loss, internal valves help isolate the failing tire so you don’t dump both. The 2-pack covers one axle, making this a simple upgrade with fast payback in tire life and uptime.
Pros:
- 👍 Keeps duals equalized for longer tread life and safer handling
- 👍 At-a-glance indicator at 100 PSI simplifies pre-trip checks
- 👍 Single fill point speeds airing up and pressure maintenance
- 👍 2-pack covers one axle; fleet-friendly and scalable
Cons:
- 👎 Installation takes time; hoses must be routed and secured correctly
- 👎 More fittings mean more potential leak points if not installed well
- 👎 Visual-only alerts; no in-cab or wireless notifications
Cat’s Eye 105 PSI Dual Truck 2-Pack
Perfect for fleet managers, RV owners, and dually truck drivers who want consistent 105 PSI in their dual tires without constant manual checks.
The standout feature is automatic pressure equalization between duals. If one tire drifts to 100 PSI and the other is 110, the system balances them so both run evenly, cutting edge wear and heat. The “cat’s eye” indicator makes checks instant: green means go, yellow means add air. You also inflate both duals from a single valve, which saves time at the pump.
Built for heavy use, the braided hoses and metal housing handle road grime and vibration. A safety check valve isolates a leaking tire so one slow leak won’t take both sides down. The 2-pack covers one axle, which is handy for most trucks. Installation takes planning for hose routing, but once mounted, it’s a set-and-forget upgrade that pays off in tire life and peace of mind.
Pros:
- 👍 Automatically equalizes dual-tire pressure for even wear.
- 👍 Quick visual status with the “cat’s eye” indicator.
- 👍 Single-point inflation simplifies maintenance.
- 👍 Leak-isolating check valve helps protect against a double flat.
- 👍 Durable hoses and housing suited for heavy-duty use.
Cons:
- 👎 Installation can be time-consuming and requires proper brackets.
- 👎 105 PSI setpoint may not fit every tire spec.
- 👎 Higher upfront cost than basic TPMS caps.
Cat’s Eye 120 PSI Dual Truck 2-Pack
Perfect for fleet managers, RV owners, and work-truck drivers who want rock-solid dual-tire pressure control without fiddly electronics.
The Cat’s Eye 120 PSI Dual Truck 2-Pack equalizes pressure between your duals and shows status at a glance. The “eye” sits flat at set pressure and curves when it’s low, so you spot trouble fast. Equal pressure cuts heat and cupping, and helps the truck track straight. Example: one dual drops 10 PSI; Cat’s Eye shares air from its mate and flags the loss, and you top off both tires through a single fill point. The 120 PSI rating suits many medium- and heavy-duty rigs.
Durability stands out. Rugged hardware and hoses handle spray, salt, and vibration, and internal check valves isolate a blowout so the good tire doesn’t dump air. It mounts cleanly on the hub with proper routing and clearance. If you want a tough, low-maintenance visual monitor for duals, this 2-pack is a smart pick for one axle.
Pros:
- 👍 Equalizes duals to reduce wear, heat, and drift.
- 👍 Instant visual indicator for quick walkaround checks.
- 👍 Single-point inflation/deflation saves time.
- 👍 Fail-safe check valves protect the companion tire during a flat.
- 👍 Rugged build suited for fleet and RV duty.
Cons:
- 👎 Installation takes time; many will prefer professional setup.
- 👎 Not a wireless TPMS, so no in-cab alerts or logging.
- 👎 Must match PSI rating and valve layout; 120 PSI doesn’t fit every application.
Cat’s Eye 120 PSI Dual Truck 4-Pack
Perfect for fleet managers, owner-operators, and RVers running dual wheels at 120 PSI who want automatic pressure balance and quick visual checks.
It automatically equalizes pressure between the two tires and gives you an at-a-glance visual indicator. If one tire drifts to 112 PSI while the other sits at 120, the system shares air to level them. The indicator shows that pressure is off, so you top up from a single fill point and get both back to 120. Result: even wear, cooler running tires, and steadier handling.
The hardware feels built for the long haul. Corrosion-resistant fittings and braided hoses handle heat, spray, and curbs. An internal check valve isolates a fast-leaking tire, so the healthy mate doesn’t dump its air. This 4-pack outfits two dual-wheel axles, making it a smart upgrade for uptime, fuel economy, and tire life.
Pros:
- 👍 Automatic equalization keeps duals matched for even tread wear.
- 👍 Single-point fill and at-a-glance indicator speed up pre-trip inspections.
- 👍 Safety check valve helps protect the good tire during a rapid leak.
- 👍 Rugged, corrosion-resistant hoses and fittings suit harsh conditions.
- 👍 4-pack covers two axles; easy to standardize across a fleet.
Cons:
- 👎 Not a wireless TPMS; no in-cab alerts or detailed PSI readouts.
- 👎 Installation takes time and planning to route hoses and mount brackets.
- 👎 Fixed 120 PSI setting means less flexibility if you change tire spec.
Cat’s Eye 110 PSI Dual Trailer 2-Pack
This 2‑pack is ideal for trailer owners with dual wheels who want steady, balanced tire pressure and quick, at‑a‑glance checks. It takes the guesswork out of managing inner duals, which are hard to reach. You’ll spend less time crouching with gauges and more time rolling.
The standout feature is pressure equalization at a 110 PSI setting. Both tires in each dual run at the same pressure, which reduces uneven wear and heat build‑up. The visual “eye” makes status obvious: if one tire drops, you’ll see it instantly and can fill both from a single valve. Example: pick up a small nail, see the indicator change, top up at one point, and get back on the road fast.
Build quality is trailer‑tough, with weather‑resistant components and flexible lines that stand up to grime and spray. The 2‑pack covers both duals on one axle, and installation is straightforward with basic tools. For longevity, safety, and simplicity, it’s a smart upgrade.
Pros:
- 👍 Equalizes dual tires for even wear and cooler running
- 👍 Clear visual indicator for quick walk‑around checks
- 👍 Single‑point inflation saves time and hassle
- 👍 Durable, weather‑resistant lines and hardware
- 👍 2‑pack covers one axle’s duals
Cons:
- 👎 No in‑cab alerts; you must visually inspect the indicator
- 👎 Installation may require mounting brackets and a little drilling
- 👎 Fixed 110 PSI setting won’t suit lower‑pressure setups
Buyer’s Guide: 3 Key Factors to Consider
1) Fitment & PSI Set Point
Match the system to your tire setup first. Verify it’s designed for duals (inner/outer) and that the hose lengths and brackets fit your wheel size and offset. Choose a model with a factory-set pressure that matches your vehicle placard—don’t guess. If you run variable loads, consider a set point 5–10% below your max to avoid constant “low” indications.
2) Build Quality & Weather Resistance
Look for stainless hardware, brass valves, and UV/salt-resistant hoses. A sealed indicator window and replaceable O-rings are must-haves for year-round reliability. If you drive in harsh winters or on gravel, prioritize abrasion-resistant lines and metal guards. A clear parts catalog and easy access to replacement hoses and gauges will save headaches later.
3) Visibility & Upkeep
Pick an indicator that’s easy to read at a glance from a standing position and at different angles. Color bands or high-contrast dials help. Plan a simple routine: quick visual checks before trips, soapy-water leak checks after installation, and hose/valve inspections every oil change. Keep a quality tire gauge handy to verify pressures when the indicator flags low.
Frequently Asked Questions
Q1: How does a Cat’s Eye system work?
A1: It mechanically equalizes pressure between dual tires and provides a visual indicator when pressure drops below the set point. During normal operation, air flows to keep both tires matched; if pressure falls, the indicator shows “low” so you can address it before heat and wear build up.
Q2: If one tire punctures, will it deflate the other?
A2: Quality systems include a check valve that isolates a rapid loss, preventing both tires from going flat. Slow leaks may still equalize across the pair, which buys time but doesn’t replace repairing the leak—use the indicator as your early warning.
Q3: Is this the same as an electronic TPMS?
A3: No. Cat’s Eye-style units are mechanical and visual; they don’t send app alerts. Many owners pair them with a Bluetooth/telematics TPMS for real-time in-cab notifications while keeping the equalization benefits on the duals.
Q4: How do I choose the right pressure rating?
A4: Match the set point to the vehicle’s tire placard or fleet spec at your typical cold temperature. If you operate across big temperature swings, stick to the manufacturer’s recommended cold inflation and verify with a gauge during seasonal changes.
Q5: Can I install it myself?
A5: Often, yes. You’ll mount the indicator, route hoses to both valve stems, and check for leaks. Follow torque guidance for brackets, avoid hose kinks, and recheck fittings after the first drive. If you’re unsure about clearance or routing, have a tire shop handle it.
Q6: Does it work in winter and with balancing beads or sealants?
A6: Most quality kits are rated for cold-weather use; confirm the temperature range on hoses and seals. Balancing beads are typically fine, but liquid sealants can foul valves—check the manufacturer’s compatibility notes before using sealants.
Final Verdict: Which One Should You Buy?
For most drivers and RV owners, our Best Overall pick offers the easiest-to-read indicator, sturdy hardware, and spot-on pressure options for duals. Budget-minded shoppers can choose our Value pick without sacrificing safety essentials. Heavy-haul or year-round fleets should step up to the Heavy-Duty choice for superior hoses and corrosion resistance. Pair any of them with a TPMS if you want in-cab alerts.
