Give your UCE Royal Enfield clean, factory-fit protection with the 1990634 Silver Octagon Engine Guard. This genuine GMA/OEM guard is built from 32 mm stainless-steel tube, so it resists corrosion even when scratched, and carries subtle Royal Enfield branding on the uprights. The octagon profile hugs the frame, adding a solid first line of defense for crankcase covers and lower engine hardware while keeping the bike’s heritage lines intact. 

Royal Enfield lists 1990634 as the Silver Octagon Engine Guard with an estimated 20-minute fitting time, engineered for Classic 350/500 UCE, Bullet 350/500, and Electra 350. Bolt-on installation to stock mounting points means no drilling or welding; service access and lean clearance remain close to stock. 

If you prefer a darker look, the same octagon pattern is offered in a black finish under a different part number. Staying with a genuine RE accessory keeps geometry, finish, and warranty alignment consistent—ideal for touring, commuting, or rough roads. 

Key Features

• Genuine Royal Enfield GMA/OEM accessory — Part No. 1990634.

• 32 mm stainless-steel tubing; corrosion-resistant even when scratched. 

• Distinct octagon profile with OE branding on uprights.

• Bolt-on install to factory points; ≈20-minute fitting time.

• Designed for Classic/Bullet/Electra UCE platforms (pre-J-Series). 

• Factory look; preserves service access & lean clearance. 

Compatibility Table 

*Years vary by region; follow your microfiche for local cut-offs.

Exclusions: Not for J-Series/BS6 (Classic Reborn, Meteor, Hunter), Thunderbird/TBX, Himalayan/Scram. List only the confirmed UCE models above. 

Variants

• 1990634 — Silver/Stainless Octagon (this listing). 

• Black Octagon — separate PN (same pattern, black finish; list separately). 

FAQs

Q1: Is this stainless or just chrome-painted?
Stainless/silver finish on 32 mm stainless-steel tube for long-term corrosion resistance. 

Q2: Will it fit my 2017 Classic 350 UCE without mods?
Yes. It’s a bolt-on to OE mounting points; RE quotes ≈20 mins for fitting. 

Q3: Does it reduce cornering clearance?
The compact octagon shape hugs the frame to preserve clearances and service access. 

Q4: Is a black version available?
Yes—the octagon guard is also available in black under a different part number