Wheels, 18 x 8.5 aluminum, Diamond Cut machine finish, Deep Void Matte metallic painted

Years 2015–17, 2019, 2023, 2025–27 Models 4 Factory citations 10

Also described as Wheels, 18 inch Silver-painted aluminumWheels, 18 x 8 (45.7 cm x 20.3 cm), High Gloss Black painted aluminumWheels, 18 x 8.5, 5 spoke, Black-painted alloy

Also documented for GMC

Documented applications

Camaro — Gen 6 Alpha (2016–2024)

2016, 2019, 2023 Factory-verified

GM factory document — 2016 chevrolet camaro fleet order guide wayback, p.1.
GM factory document — 2019 chevrolet camaro fleet order guide wayback, p.5.
GM factory document — 2023 chevrolet camaro fleet order guide wayback, p.4.

Colorado — Third generation (2023–2027)

2025–2027 Factory-verified

Z71: O; WT, LT, Trail Boss, ZR2: not offered

GM factory document — 2025 chevrolet colorado fleet order guide, p.40.
GM factory document — 2026 chevrolet colorado fleet order guide, p.45.
GM factory document — 2027 chevrolet colorado fleet order guide, p.45.

Silverado 1500 — Fifth generation (2027)

2027 Factory-verified

GM factory document — 2027 chevrolet next generation silverado 1500 retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet next generation silverado 1500 retail and fleet fleet order guide, p.31.

Silverado — K2XX (2014–2019)

2015, 2017 Factory-verified

GM factory document — 2015 chevrolet silverado 1500 fleet order guide wayback, p.1.
GM factory document — 2017 chevrolet sierra silverado electrical body builders manual service manual 2017 en us, p.28.

This page aggregates every documented appearance of REG in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.