Need 2021 GMC Sierra 1500 ball joints, control arms, hubs, or a front-end kit? 2021 is T1XX Sierra 1500 (2019–2024 new body style — shares the chassis with Silverado T1XX). This is not 2014–2018 K2XX, not 2019 Classic / LD (2018 body), not Sierra 1500 Limited (prior body), not 2500/3500 HD, and not Yukon/Yukon XL (some parts overlap — confirm your truck).
A mid-window T1XX year: the 2021 GMC Sierra 1500 still shares the 2019–2024 new-body platform. AT4 and Denali (including ARC) need the right leveling path — do not grab Trail Boss-only Silverado kits blindly.
Find the Suspension Parts you Need
A clunk at low speed is usually a ball joint or sway link. Wander or inner-edge tire wear is more often a tie rod or a worn control-arm bushing. Most people replace the control arm as a complete unit with the ball joint already pressed in. Growl that rises with road speed points at the hub/bearing.
Other Sierra years: 2019 · 2020 · 2021 · 2022 · 2023 · 2024
Same-year Chevy: 2021 Silverado (same chassis)
Jump to: Shop notes · Works Kit · Front · Steering · Fitment notes
Leveling the rake? Compare ReadyLIFT, Rough Country, Cognito, Superlift, and Bilstein kits for this Silverado/Sierra generation: 2019–2024 Silverado / Sierra 1500 2 Inch Leveling Kit.
Featured picks for this year. Full compare on the shared Silverado/Sierra leveling hub: 2019–2024 Silverado / Sierra 1500 2 Inch Leveling Kit.
Superlift: 40040. More in the Superlift catalog guide.
ReadyLIFT: 66-39150, 66-39151. More in the ReadyLIFT catalog guide.
Cognito: 110-91044, 110-90795. More in the Cognito catalog guide.
Rough Country: 501065. More in the Rough Country catalog guide.
Bilstein: B8 6112. More in the Bilstein catalog guide.
2021 GMC Sierra 1500 suspension — T1XX shop focus
Model-year 2021 sits in the T1XX GMC Sierra 1500 window (2019–2024). It shares the platform with Chevy Silverado 1500 T1XX. It is not 2500/3500 HD and not the 2014–2018 K2XX generation.
Front-end parts for this T1XX 2021 Sierra 1500. Moog outer/inner tie rods: ES801533 / EV801527. Ball joints, lower arms, and hubs below are matched for 2021 Sierra 1500 — confirm 4×2 vs 4×4 and trim (AT4 / Denali / ARC) before you order.
What usually brings people here
- Low-speed clunk → ball joint or sway link (Front Ball Joints / K750963).
- Wander or inner-edge tire wear → outer/inner tie rod (ES801533 / EV801527) or a worn control-arm bushing.
- Growl or rumble that rises with road speed → wheel hub/bearing (4WD Hubs).
Shop notes only — not a service manual. Use the factory procedure for wrench work, torque, and safety steps. Leave a comment with 4×2 vs 4×4, AT4 / Denali / ARC, and the symptom if you want a part-number check.
Works Kit — 2021 GMC Sierra 1500 front-end (T1XX 2019–2024 · not 2500/3500 HD)
Front-end parts for this T1XX 2021 GMC Sierra 1500 (not Classic/LD, not 2500HD, not K2XX): Moog outer/inner tie rods ES801533 / EV801527, ball joints Front Ball Joints, 4×4 hubs 4WD Hubs. Alignment after tie-rod or arm work — order it all once, do it right.
- Wander / tire-wear — Outer ×2 ES801533 · Inner ×2 EV801527 · alignment after install
- Clunk path — Front Ball Joints (or replace lower arms as a unit: Lower Control Arms)
- Hub growl (4×4) — 4WD Hubs
- Full front-end refresh option — 10pc Front End Kit
2021 GMC Sierra 1500 front suspension
Ball joints
- Front ball joints: Front Ball Joints — matched for the T1XX Sierra 1500; confirm year and trim
Control arms with ball joint
- Front lower control arms with ball joints: Lower Control Arms — matched for the T1XX Sierra 1500; confirm 4×2 vs 4×4
Sway bar links
- Front sway bar link: K750963 (fits 2019–2021 Sierra/Silverado 1500)
- Front sway bar links: Sway Bar Links — confirm your truck is not Z7X / ZRX or a factory 2″ lift package
Wheel hubs & bearing assemblies
Front-end kits
- 10pc front-end kit: 10pc Front End Kit — convenient stack when replacing multiple worn joints at once
2021 GMC Sierra 1500 steering
Tie rod ends (Moog; fits 2019–2024 Sierra/Silverado 1500)
Fitment notes
Confirm 4×2 vs 4×4, AT4 / Denali / Elevation, and Adaptive Ride Control (ARC) before you order. On Sierra, AT4 is the off-road trim (not Trail Boss — that name is Silverado). Do not mix 2014–2018 K2XX or 2019 Classic (LD) control-arm numbers (including Moog RK623298 / RK623299 / RK623125 / RK623126) onto this new-body truck.
Do not use Moog RK623298 / RK623299 / RK623125 / RK623126 on this truck — those fit 2014–2018 GM 1500 and 2019 Classic (LD), not this new-body T1XX.
Same chassis Chevy page: 2021 Chevy Silverado 1500 suspension. Older K2XX gen leveling: 2014–2018 2″ leveling hub.
Shared GM 1500 diagrams and older Moog rows (through 2018) are on the Silverado 1500 catalog page. Related: Silverado kit page. How to diagnose suspension noises.
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Leave a comment with 4×2 vs 4×4 and the noise if you want a part-number check. #HAPPYMOTORING
Same-year ride control and brakes: 2021 GMC Sierra 1500 shock parts · 2021 GMC Sierra 1500 brake parts.