The GPR Powercone is a slip-on exhaust silencer for the Ducati Monster 821, featuring a conical carbon-look end cap and road-legal homologation for everyday use. Made by Italian manufacturer GPR Exhaust Systems, the Powercone range balances sound enhancement with road compliance across a wide range of sport and naked motorcycles.
Fitment: Ducati Monster 821 (2015–2016)
- Slip-on muffler — direct replacement for OEM silencer, retains standard headers
- Road legal — supplied with homologation approval for EU/UK use
- Carbon-look conical end cap with stainless steel body for a race-inspired finish
What riders are saying about us
Real reviews from verified buyers on Trustpilot and eBay — see them all on the original platform using the links below.
⭐ Rated 4.5/5 "Excellent" on Trustpilot · 98.7% positive feedback across 18 years selling on eBay
From Trustpilot
"I bought crash bars for my Yamaha Warrior 1700 and they fit perfectly. I also asked about additional protection for my bike and received a very quick response. Highly recommend this shop!"
"Lot of information on the website. Good communication from the shop. Product is great. Delivery was quicker than I expected."
"Ben was a great help in answering my many questions. The motorcycle seat I ordered is above my expectations."
"Rare part, great price and fast shipping to the US. Very happy customer."
"Great service. Good and easy info. Delivery as expected. Very nice work. And fast shipping."
Read all reviews on Trustpilot →
From eBay
"Quality 10. Value 10. Communication 10."
"Very nice product. Good quality stitching and fits perfectly. The gas tank hole lines up properly. I want to get the tank bags now to match. Highly recommend this product."
"Received in excellent condition. No damage. Fit and finish was more than I expected. I could not have been happier. Thank you."
"Thanks, great looking cover and faster than expected delivery, very fast."