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RX28SE Gen 3 – 1/28 Scale RC Chassis Kit

Precision. Versatility. Style.

Get ready to take your racing program to the next level with the RX28SE Gen 3 — the ultimate 1/28th-scale RC car chassis designed for enthusiasts who demand performance without compromise. This third-generation platform is built to dominate any surface with fine-tuned handling, premium materials, and unmatched tuning potential.

Key Features & Upgrades

Revamped Front-End:

• 1mm longer front arms for enhanced stability

• All-new sway bar system for sharper cornering response

• Adjustable caster (3-screw system)

• Integrated front shock tower with shim adjustment

• Adjustable upper arm hinge pin height for custom camber gain and roll center tuning

• Low-profile big bore shocks & springs for buttery-smooth handling and high grip

Rear-End Innovations:

• Lower CG Rear Design for increased agility

• New motor mount – lowers motor by 0.8mm

• 3-screw damper mount – simplifies rear suspension maintenance

• Tweak brace dropped by 1.25mm for enhanced cornering performance

• Shorter side springs & thinner perches

• Side dampers lowered by 3mm, now screw-mounted to motor mount

• Smaller center shock spring, collar, and perch

• Pinned Rear Motor Pod Plate – improved precision and durability

Signature SE Upgrades:

• 24mm Steel Tub Chassis – Industry-leading rigidity, low CG, and durability

• Includes both Premium Ball Differential & Gear Differential

• Two sets of plastics included: Black & Gray (excluding lower arms)

What's Included:

• RX28SE Gen 3 Chassis Kit

• One Set of Wheels & Tires

• Steel Tub Chassis

• Ball & Gear Differential

• Black & Gray Plastic Parts (excluding lower arms)

Note: Electronics, body, and mounting hardware are NOT included.

Specifications:

• Wheelbase: 98mm

• Weight (RTR): 145g–170g (depending on body & electronics)

• Rear Track Width: 69mm–78mm

• Front Track Width: 72mm–75mm

Required to Complete (Not Included):

• Body & Mounting Hardware

• Electronics:

  • Motor

  • LiPo Battery

  • ESC (Electronic Speed Controller)

  • Receiver

  • Servo

Servo Compatibility:

• Reflex Racing RRE007 (20T Spline) – Recommended

• AGFC A06CLS V1

• GL Racing Servo

• PN Anima

• Atomic Servo (tight fit, but correct spline size)

Important Notes:

• ELECTRONICS ARE NOT INCLUDED

RX28D Gen 3 – 1/28 Scale RC Car Chassis Kit

Redefine Performance. Precision. Possibility.

The RX28D Gen 3 is here to raise the bar for 1/28-scale RC racing. Built for drivers who demand speed, agility, and pinpoint control, this third-generation chassis is fully re-engineered to dominate the track with cutting-edge design and next-level adjustability.

🔧 Key Upgrades & Features

🚗 Front-End Enhancements:

• 1mm longer front arms for improved stability and smoother handling

• Integrated sway bar system for surgical cornering precision

• Adjustable caster (via 3 screws)

• Integrated front shock tower with shim-based ride height tuning

• Upper arm hinge pin height adjustment for custom camber gain and roll center

• Lightweight & durable plastic knuckles – new design, less weight, more strength

• Low-profile big bore shocks & springs – ultra-smooth, responsive handling

🏁 Rear-End Innovations:

• Lower CG Rear End for high-speed stability

• New motor mount – lowers motor by 0.8mm

• 3-screw damper mount – simplifies rear suspension servicing

• Tweak brace lowered by 1.25mm for improved response

• Shorter side springs + thinner perches

• Side dampers lowered by 3mm, now screw-mounted to motor mount

• Smaller center shock spring, collar, and perch

• Pinned rear motor pod plate – boosts durability and rear-end precision

🛠️ Ease of Maintenance:

• Standardized ball stud hardware used throughout

• Simplifies adjustments and part replacements

• Designed with trackside tuning in mind

📦 What's Included:

• RX28D Gen 3 Chassis Kit

• One set of wheels and tires (pre-mounted)

⚠️ Note: Electronics NOT included. See below for compatibility.

📏 Specifications:

• Wheelbase: 98mm

• Weight (RTR): 145g–170g (depending on body & electronics)

• Rear Track Width: 69mm–78mm

• Front Track Width: 72mm–75mm

🔌 Electronics Required (Not Included):

• Motor

• LiPo Battery

• ESC (Electronic Speed Controller)

• Receiver

• Servo

✅ Compatible Servos:

• Reflex Racing RRE007 (20T Spline) – Recommended

• AGFC A06CLS V1

• GL Racing Servo

• PN Anima

• Atomic Servo (tight fit, but compatible spline size)

🛠️ You Will Also Need:

• Body + Mounting Hardware

• Compatible electronics listed above

🚨 NOTE:

ELECTRONICS ARE NOT INCLUDED! This kit is designed for experienced builders who want a customizable, high-performance platform.

RX28K-KITG2 (New Old Stock) Never been opened and or used. Rare Find!

RXGL-KIT 

This is a comprehensive conversion kit designed to make your Giulia Leaner, faster and more durable. This conversion kit makes your Giulia, RTR around 165-175g, depending on other miscellaneous parts, body and electronics selection. It is designed to be used with the smaller, 8.5mm tall servos like the Reflex Racing RRE007.

The kit includes:

Hardcoated Stainless Steel Main Chassis

7075 T6 Aluminum Motor Mount, Servo mount, Center Shaft and Battery Hold Down System

CF Shock Towers, Top Deck, battery hold down tabs and HW motor, motor mount Spacer

Adjustable F/R Shocks and Front Springs (you will use the std front springs in the rear to start)

Delrin Servo Horn

Necessary Hardware for Installation

*car images show prototype, some items, such as springs can vary.

Link to Instructions - https://www.reflexracing.net/assets/images/Giulia_Conversion_kit.pdf?rdm=978EEBBE85B0

RX28-UKIT

Updated kit to bring your RX28 Gen 1 car to Gen 2 spec.

This kit includes all the critical update parts included in the new Generation cars. It includes:

-RX28A-20 Reflex Racing RX28 30g Steel Chassis Plate and SE Style steering CF plate

-RX28-045G2 RX28 G2 Medium A Arm Set

-RX28-052 RX28 Gen 2 Motor Mount

-RX28-050 RX28 Gen 2 Molded Center Pivot

-RX28-049 RX28 Gen 2 Molded Side Links

RX28SE-08

This all new chassis for your RX28SE Gen 2 changes the battery and shock mounting system slightly so that we can have more space to move the 340mah hardcase lipo fore and aft on the chassis, as well as allowing for our new 400mah LiHv battery to fit in the chassis in 98mm configuration. This chassis also sheds approximately 5-6g off of the chassis in higher areas ensuring that while the chassis gets lighter, the center of gravity does not suffer. The kit is finished off with a new forward center shock mount that incorporates a band-less battery hold down that is more reliable and easier to use.

Low Profile Damper System – PN2.5 AAA Chassis

Achieve the Ultimate Low CG Setup for Your AAA Car

Introducing our all-new Low Profile Damper System, specially engineered for the PN2.5 AAA chassis. By repositioning the dampers through innovative design, we've created an extremely low center of gravity suspension setup—delivering unmatched performance and handling on the track.

This high-performance suspension kit is designed for simplicity and compatibility, making it easy to upgrade your PN2.5 with confidence.

Key Features:

• ✅ Ultra-Low CG Design – Improved cornering stability and smoother transitions

• ✅ Direct Fit for PN2.5 AAA Chassis – No modification needed

• ✅ T-Bar Compatible – Seamlessly integrates with traditional T-bar setups

• ✅ Durable & Lightweight – Engineered for serious racers

What’s Included:

• Complete Low Profile Damper Assembly

• All required mounting hardware

• Instructions for easy installation

Note: Center top shock is not included. You can use our Reflex Racing RX28A-32 or any other traditional 1/28 scale center shock of your choice.

Upgrade your suspension. Lower your CG. Win more races.

RX28A-17

Old School Style Sliding Coil Over King Pin Front Suspension set.

This suspension set is fully adjustable, dampened and super easy to use!

Included in kit:

-1x Lower Tower Bar

-1x Left and Right Upper Arm Strut

-4x Delrin Pivot Balls

-2x Grooved Upper Split King Pin 

-2x Lower Split King Pin 

-2x Delrin Spring Perches

-2x Medium Front Springs

-2x0.25mm Copper Washers

-2x 0 Degree Camber Inserts

-2x 0.5 Degree Camber Inserts

Car is able to set:

-2 or 4 degrees Caster

-1.0, 1.5, 2.0 degrees Camber

Please NOTE:

POLISH YOUR KINGPINS. This will ensure the smoothest operation. The finish is good on the pins, but mirror polishing sliding kingpins is day 1 stuff. The extra bit of work is worth it.

THIS FRONT END DOES NOT INCLUDE KNUCKLES AND AXLES.  

The best way to polish them is to set up the king pins on a drill or rotary tool and polish with a good polishing compound like mothers. Spin it and shine the parts until mirror-like finish. Once polished, clean them and lube them. We suggest Kyosho 30,000 Blue Gear Grease.

INSTALLATION INSTRUCTIONS

https://www.reflexracing.net/assets/images/KISS_Instructions.pdf?rdm=2A156E237CAF

RX28K-UKIT

Updated kit to bring your RX28K Gen 1 car to Gen 2 spec.

This kit includes all the critical update parts included in the new Generation cars. It includes:

-RX28A-20 Reflex Racing RX28 30g Steel Chassis Plate and SE Style steering CF plate

-RX28-052 RX28 Gen 2 Motor Mount

-RX28-050 RX28 Gen 2 Molded Center Pivot

-RX28-049 RX28 Gen 2 Molded Side Links

RX505X

EVERYTHING YOU NEED TO CONVERT YOUR GLR-GT TO THE RX505 REAR END IN 1 PACKAGE.

NICE & EASY!

INCLUDED IN PACKAGE-

1 - REFLEX RX505 CONVERSION KIT

1 - GL-S005 - GLR SHOCK BODY TREE (GLR SIDE SHOCKS (2 PCS) NEEDED TO COMPLETE)

1 - GLR-6174 - GLR METAL SHOCK PISTONS (2 PCS NEEDED TO COMPLETE)

1 - GL-GT-029 - GLR-GT 3.5MM BALL JOINTS (2 PCS NEEDED TO COMPLETE)

1 - GLR-S021 - GLR 3.5MM BALL JOINT HEADS (2 PCS NEEDED TO COMPLETE)

When the V3 Tool Set Came out we were still setting our style. We made sure we made the tool sets really good quality, but we were still using slightly customized, generic handles offered by tool factories. This time around though, we designed our own tools from the ground up. Careful attention was placed on the details and the result is a super nice tool set that now matches all you other cool Reflex Tools.

RX537

This V3 tool kit has an all new smooth handle finish and now includes a PH 00 Philips head screw driver that is more effective with the small pivot adjustment screws on the RX28. It comes with the necessary drivers to assemble your RX28. It is also compatible with most 1/28 scale car kits in the market today.

It includes:

Allen Drivers:

0.9mm

1.3mm

1.5mm

Nut Drivers:

4.0mm

4.5mm

Phillips Driver:

#0 (4mm)

#00 (2mm)

RX538 

It's finally here! Our all new Gear differential was designed to be a high quality and high performance addition to your 1/28 scale car. More rotation and harder acceleration than the ball differential yields a car that is often about a tenth faster to drive in high traction surfaces. The feel of this gear diff is very balanced and this makes the acceleration super smooth and strong. At only about 4.7g, it is also super light for less rotational mass.

The gear diff is sealed from the elements as the gears are inside a machined aluminum case in which you can larger amounts of grease to change the behavior of the differential action. The ticker the grease, the lower response into the corner, but this could be at the expense of a little bit of exit traction. We don't recommend going too heavy on the oil (maybe use no more than 1 or 2k CST oil), but you can use oil with no leakage at the spur and only slight leaking at the outputs. 

INSTRUCTION MANUAL - https://www.reflexracing.net/assets/images/GearDiff_Manual.pdf?rdm=E9A4E1CA4AD2

RX28A-38

Replacement front end for your RX28.

It includes:

-Bulkhead

-Upper and Lower Hinge Pins

-Gray (Hard Arms)

-RX28 Shock Set with Green Front Springs

-Front Shock Tower

-Necessary Hardware For Installation of all parts on the front end.

Required:

-Knuckles

-Front Axles

RX521V2

This set-up board is made from 3mm CF. It Measures 165x200mm and is the perfect size to comfortably work on and travel with in your pit gear. Included on the board is a round bubble level and 4 adjustable machined aluminum feet to set the board flat in order to make adjustments for your car more precise. The New Version 2 board also included machined parts pockets to help you keep loose items like body clips and wheel nuts in your pit.

RX28A-43

All New RX28 Steel Chassis for your RX28G2 LM Plate Cars. This new chassis allow for fore and aft movement of 24mm wide batteries. This new chassis kit comes with lateral CF braces to locate the battery side to side, but also to stiffen the front to back structure of the car for more precise handling and higher corner speeds. The kit is finished off with a new forward center shock mount that incorporates a band-less battery hold down that is more reliable and easier to use.