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Kuat Piston Pro X Bike Rack for 4 Bikes - 2" Hitches - Wheel Mount
Kuat

Kuat Piston Pro X Bike Rack for 4 Bikes - 2" Hitches - Wheel Mount

Part Number: KU45VR
$3,087.00
Hitch Bike Racks
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Product Images

In Use/Installed

Premium rack has arms that deploy with the tap of a lever, making loading and unloading bikes almost effortless. Arms hold your bikes securely by the wheels. Built-in LEDs use your vehicle's 4-way plug to sync with your brake lights. 1-800-940-8924 to order Kuat hitch bike racks part number KU45VR or order online at etrailer.com. Free expert support on all Kuat products. Great prices and Fastest Shipping for Kuat Piston Pro X Bike Rack for 4 Bikes - 2" Hitches - Wheel Mount. Hitch Bike Racks reviews from real customers.
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  • Reviews (46)
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Kuat Hitch Bike Racks - KU45VR

Highlights

  • Carry Up to 4 Bikes Securely: Holds 4 bicycles, each up to 40 lbs, with wheel sizes 18"–29" and tires up to 5".
  • Load Bikes with One Tap: Hydro-pneumatic arms open automatically for fast, easy bike placement.
  • Protect Every Frame: Wheel-only contact prevents any scratches or paint damage.
  • Access Cargo Fast: Tilts with bikes loaded and folds for compact storage when not in use.
  • Stay Visible on the Road: Built-in LED brake lights and turn signals plug into a 4-way connector.
  • Lock Everything in Place: Includes cable and hitch locks to secure both bikes and rack.

Features to know about

Effortless Loading: Hydro-Pneumatic Arms Do the Work

Loading heavy bikes can be awkward, but here it’s as simple as tapping a lever. The Kuat Piston Pro X uses hydro-pneumatic struts that automatically open and close the arms, so you can guide your bike into place with both hands free. Each arm locks onto the wheels—not the frame—keeping your paint and decals untouched. Bridges are labeled for 20", 24", 26", 27.5", and 29" tires, making setup quick no matter what wheel size you’re running.

Kuat Piston Pro X bike rack hydro-pneumatic ratcheting arms with release levers for easy bike loading.

Kuat Piston Pro X U-shaped arm with adjustable bridge labeled for various bike tire sizes from 20 to 29 inches.

Kuat Piston Pro X bike rack arms securing a bicycle wheel with ratcheting mechanism.

Smooth Hauling for Every Ride: 40 lb per Bike, up to 5" Tires

Whether it’s a road bike or a fat-tire e-bike, this rack is built for it. The Piston Pro X carries four bikes at up to 40 lbs each, with trays that fit tires from 18" to 29" and widths up to 5". Grooved wheel trays let you shift bikes front to back to avoid handlebar clash, so everything rides steady. The front two positions can be removed when you only need space for two, keeping it lighter and more compact for smaller trips.

Kuat Piston Pro X bike rack grooved wheel trays for adjustable bike positioning and multiple tire sizes.

Easy Access on the Go: Tilts and Folds with One Pedal

Grabbing gear mid-trip doesn't mean unloading bikes. A spring-loaded hand and foot pedal lets you tilt the rack down even when it’s fully loaded, giving you instant access to your cargo area. When parked or stored, the rack folds up tight, staying clear of walkways and garage doors. It’s a small thing that makes daily use and travel stops a lot simpler.

Kuat Piston Pro X bike rack tilted down with bikes loaded for rear cargo access.

Kuat Piston Pro X bike rack folded upright for compact storage or parking.

Kuat Piston Pro X spring-loaded hand and foot pedal for tilting and folding the rack.

Stay Seen and Secure: Built-In Lights and Locking System

Brake lights and turn signals are built right into the rack, powered by a 4-way flat connector that syncs with your vehicle. That means you stay visible even when four bikes block the tail lights. The rack also locks down tight—a braided steel cable secures your bikes, and a stainless-steel hitch lock keeps the rack itself in place. Both are integrated, so there’s no extra gear to fumble with.

Kuat Piston Pro X integrated LED brake lights and turn signals for improved visibility.

Kuat Piston Pro X 4-way connector wiring for built-in LED lights and signals.

Kuat Piston Pro X integrated braided cable lock securing bicycles to the rack.

Kuat Piston Pro X stainless steel hitch lock securing rack to vehicle hitch.

Ready for Heavy Lifts: Ramp and Fender Kit Options

For those hauling e-bikes or step-through frames, the optional telescoping aluminum ramp (sold separately) takes the strain out of loading by letting you roll bikes on and off. A hook-and-loop strap kit (sold separately) adapts the setup for bikes with fenders, keeping everything stable and protected. Together, they make the Piston Pro X ready for just about any ride you want to bring along.

Kuat Piston Pro X telescoping aluminum loading ramp accessory for easy e-bike loading.

Kuat Piston Pro X hook-and-loop fender strap kit for safely carrying bikes with fenders.

Specs

Application

  • Hitch receiver size: 2" x 2" trailer hitch receivers

Weight and Capacity

  • Carrying capacity: 4 bicycles
  • Weight capacity: 40 lbs per bike
  • Carrier weight: 108 lbs

Wheel Compatibility

  • Wheel size: 18" - 29"
  • Maximum tire width: 5"
  • Maximum bike wheelbase: 53"

Dimensions

  • Distance from center of hitch pin hole to closest part of rack when folded down: 10-1/8"
  • Distance from center of hitch pin hole to closest part of rack when folded up: 6-3/8"

Warranty

  • Limited lifetime warranty

PX22G Kuat Piston Pro X 2 Bike Tray Style Platform Rack - 2" Hitches - LED Tail Lights - Aluminum - Galaxy Gray

PXA2G Piston Pro X Add On LED Platform Rack w/Kashima - 1 Bike

Installation Details KU45VR Installation instructionsAlternate Instructions KU45VR Installation instructions



Ratings & Reviews

4.8

46 reviews
Review sort icon
Premium rack has arms that deploy with the tap of a lever, making loading and unloading bikes almost effortless. Arms hold your bikes securely by the wheels. Built-in LEDs use your vehicle's 4-way plug to sync with your brake lights.

by:

Just as advertised if not better. Outstanding overall experience.



by:

Been using Kuat NV for several years. Decided to upgrade to the new PP. Setup was super easy, done in 15 minutes. As typical with Kuat, the build quality and finish are excellent.



by:

Great service and great product.



by:

Truly fantastic product (despite a bit of a budget killer). Works great!



by:

Very easy to put together. Solid rack. Had an NV 2.0 already but wanted the newer rack with the lighting as I think its more safe



by:

Seems very well made and easy to use, I also have Kuat NV 2.0 , both are great racks



by:

I looked most of the no touch racks. Most of the other racks needed two hands to release them from the tire and kuat didn’t. The rack is built very well and would think it would last a lifetime. Even though this one is one of the higher priced racks I’m not disappointed in the build quality



by:

Awesome rack, awesome experience. The rack was available on Amazon with Prime shipping. etrailers had the same price, free shipping and a faster delivery time than Amazon. Support a business other than Amazon and you won’t be disappointed.



by:

It seems to be very well built. Little heavier than I thought and instructions pretty confusing.



by:

etrailer was very easy to work with and answered all my questions quickly. etrailer knew the answers to my questions about the Kuat Bike Rack but oddly the person at Kuat did not. The boxes arrived in perfect condition.



by:

Only rack we found that could carry our heavy ebikes. Love the locking mechanism!! Even works with our fenders. Wish it had place to mount license plate.



by:

Rack showed up and is exactly what we were looking for. Fast shipping 2 days from Utah to Central Washington. Great communication and updates. Will definitely order from etrailer in the future.



by:

Awesome piece of equipment.



by:

I’ve had several bike racks over the years, but none have been easier to assemble. The quality of the materials used to make this rack are very high by my standards. Not a cheap rack by any means, but I’m a firm believer in “you get what you pay for”.



by:

It's really a beautiful bike rack, and the lights work great. However, it blocks my car's back-up camera, regardless whether I keep it in up or down position. And to open my car's hatch, rack must be in down position. Things to keep in mind.



by:

Kuat Piston Pro X bike rack so far exceeds expectations on 2023 Tesla Model Y! Fabulous wellbuilt, solid platform 2 bike hitch rack w tilt & locks. Thrilled on all accounts: excellently presented product info, easy to follow lit & videos for installation & convenient access to customer service. Delivered in 3 days. Quick install. Just needed to pick up 4 flat to 7 way adaptor for hooking up electrical lights in stock at [online]. Lights awesome unique feature! Visibility from rear camera good. Contrary to video & booklet instructions may be best to insert hitch pin through holes in hitch receiver and piston shank as 1st step. Was more difficult doing this as one of the last steps. Also would be good to know about how to acquire extra set of keys. Glad to have piece of mind of bikes being tight & secure.



by:

Best bike rack I have ever owned (and I have owned several really good bike racks). It is a substantial rack and well made. If there is any downside, it is the price, but quality shows and their customer service is second-to-none. The arms capture the wheels very well, but might take some getting used to. The flatlock system and the rear LED lights are innovative and add value to the rack.



by:

Excellent build quality ! Box and packaging were exceptional, received in perfect condition! Cannot wait to get out on the trails! Etrailer website and videos truly give you everything you need to make and informed buying decision, thank you !



by:

I love this bike rack.



by:

Very sturdy and has worked out well. However, I wouldn't trust the bikes free-standing on the racks without a strong strap/bungee. Carried an e-bike to Alaska and back, over some pretty rough roads, and had no problem as long as the strap was on. If you're not handy, have a bike shop put it together for you. Getting everything tightly bolted matters.



by:

This is the coolest bike rack ever. I bought it with the swing out arm, also from Kuat so I could gain access to the stored items in the back of the Jeep. It worked out great! It even has led lights which help since I use a bike cover which obscures the Jeeps tailights.



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Great service, prompt delivery!



by:

Love the quality of the Kuat Bike Rack. I'm impressed with the service I got from Hannah at eTrailer with working with me on my order.


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See what our Experts say about this Kuat Hitch Bike Racks

  • Do You Have to Have 4-Way to Use Kuat Piston Pro X Bike Rack
    Good question, and it is not a necessity for your car to have a 4-way flat trailer connector in order to use the Kuat Piston Pro X bike racks. The 4-way connector that plugs in between the bike rack and the 4-way on your car (if you had one) comes separately in a parts bag, so it is not actually attached to the rack. I have added a photo for you which shows where you'd plug it in so you can see it is not connected to the rack. So you definitely do not have to use a 4-way with the rack...
    view full answer...
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  • Can Kuat Piston Pro X 4-Bike Rack be Used With Bikes That Have Fenders
    Yes, you can use bike with fenders on the Kuat Piston Pro X Bike Rack for 4 Bikes # KU45VR. All you'll need to do is use wrap straps around the tire and ratcheting arm with the Fender Straps for Kuat Piston Pro X Bike Rack # KU43VR. Using those straps will protect the fenders from coming into contact with the rack's arm. If your bikes are heavier and you want some help lifting them on the rack, there is also an option for a ramp with the Loading Ramp for Kuat Piston Pro X Bike Rack # KU63VR.
    view full answer...
  • Will a Kuat 4 Bike Rack Work With a 2024 Mazda CX-30
    It looks like the Kuat 4 Bike Racks : # KU77FR, # NV22B-NA22B, # KU58ZR, & # KU45VR you're referring to, all require a 2" hitch and unfortunately only a class I 1 1/4" hitch is offered for your Mazda. If you're needing a hitch, the Curt Trailer Hitch Receiver # C49CR will work great, but you're not going to be able to use your 4 bike rack. The only way any of those bike racks would physically fit is if you used a hitch expander # HTAD, but using an adapter would effectively cut your...
    view full answer...
  • Bike Rack Recommendation with Loading Ramp for Carrying 4-Bikes with Fenders
    I have 2 different bike rack options for you and it really depends on what you're wanting to get out of the bike rack. From what you said in your question it sounds like you really care about quality so for that I recommend the Kuat Piston Pro X and the following parts: - Kuat Piston Pro X Bike Rack for 4 Bikes # KU45VR - Loading Ramp # KU63VR - Fender Straps # KU43VR The is a top-of-the-line bike rack that has unrivaled ease of use. The only problem with this solution is that the...
    view full answer...
  • Weight of Kuat Piston Pro X 4-Bike Rack
    The Kuat Piston Pro X Bike Rack for 4 Bikes # KU45VR weighs 108 lbs in total.
    view full answer...
  • Recommended Bike Rack For Carrying 4 Bikes With All Different Size Wheels
    I recommend the Kuat Piston Pro X Bike Rack for 4 Bikes # KU45VR for you. This rack is capable of carrying 4 bikes with wheel sizes from 18" to 29" diameters. The Carrier itself is one of the easiest we have to use and load your bikes as it secures the bikes in place by the wheels. This also prevents any damage to the frames or paint. A Telescoping Ramp # KU63VR is also available to make loading easier. The rack includes lights which you will be able to connect to a 4-way on your vehicle...
    view full answer...

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Info for this part was:

Employee Andrew K
Installed by:
Andrew K
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Michael B
Updated by:
Michael B
Employee Carrie F
Updated by:
Carrie F
Employee Matthew S
Written by:
Matthew S
Employee Daron K
Edited by:
Daron K
Employee Jonathan Y
Video by:
Jonathan Y
Employee John S
Video by:
John S
Employee Thomas T
Video by:
Thomas T
Employee Charles A
Video by:
Charles A
Employee Conner L
Test Fit:
Conner L
Employee Aidan B
Test Fit:
Aidan B
Employee Evangeline M
Test Fit:
Evangeline M

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