Bullet Proof Designs Swingarm Guard.
PN# BPD-KTM-CG-11

BULLET PROOF DESIGNS SWINGARM GUARDS
Add additional protection to the rear guide mounts.
Machined from solid 6061-T6 billet aluminum for superior strength.
Use with the TM Designworks rear chain guide. 
Made in the USA

Fitment From Parts Finder:
KTM (12-22) 125-500 All Models (Except 2022 Factory Editions)

Also Fits Models Below:
KTM (2011) 125-450 XC,SX,XCF,SXF 
HUSQVARNA (14-22) 125-501 All Models  (Except 2022 RockStar Editions)
GAS GAS (KTM) (21-23) 125-450 All Models  (Except 2023 Factory Editions)
KTM (2023) 150-500 EXC-F, XCW, XCF-W  Models Only
HUSQVARNA (2023) 150-501 FE, TE  Models Only