Give your UCE Royal Enfield real protection with factory fit. The 1990601 Black Octagon Engine Guard is a genuine GMA/OEM guard shaped with smooth, octagonal lines that complement Classic and Bullet styling while shielding lower engine cases from slow-speed drops and stray debris. Built from 32 mm mild-steel tubing with a dual-coat corrosion-resistant finish, it’s precisely engineered to OE mounting points and carries subtle Royal Enfield branding on the uprights. 

Royal Enfield lists 1990601 specifically as the Black Octagon Engine Guard for Classic 350 UCE, Classic 500 UCE, Bullet 350/500, and Electra 350 with an indicated ~20-minute fitting time. Also available in a polished stainless variant under a different part number if you prefer a silver look. 

Because it’s an OEM accessory, clearances for service and ground-lean are preserved, and installation is a straightforward bolt-on using the supplied hardware as per the official fitting instructions for the Octagon family.

Key Features

• Genuine Royal Enfield accessory — Part No. 1990601 (Black Octagon). 

• 32 mm mild-steel tube with dual-coating for corrosion resistance.

• Distinct octagon profile with OE RE branding on uprights. 

• Bolt-on to factory points; ~20-minute install.

• Also offered in polished stainless (separate PN). 

Compatibility Table

Exclusions: Not for J-Series/BS6 or Thunderbird unless separately verified. Use the Octagon family instructions to cross-check by model year. 

Variants

• 1990601 — Black Octagon Engine Guard (this listing). 

• Stainless/Polished Octagon — alternate finish (different PN). 

FAQs

Q1: Will it fit my 2017 Classic 350 UCE without mods?
Yes. It’s listed for Classic 350 UCE with bolt-on installation. 

Q2: Tube size and finish?
32 mm mild-steel with dual-coat corrosion protection. 

Q3: Time to install?
Royal Enfield quotes about 20 minutes. 

Q4: Stainless option?
Yes—there’s a polished stainless Octagon guard under a different part number.