When these ZARD Flat 4.33″ slip-ons arrived, I was immediately impressed by the craftsmanship. Hand-made in Italy from AISI 304 stainless steel with billet aluminum end caps adorned with a laser-etched Zard logo, they look every bit as premium as the photos suggest. Opting for the matte black Cerakote® finish gave my Street Glide Special a sleek, stealthy edge that turns heads without being over the top
Installation was a breeze—no ECU remap, just a straightforward bolt-on that took me under an hour. The fitment was flawless—exactly what you want from an upgrade
On the road, the difference is undeniable. The racing version sheds around 0.3 kg compared to stock, resulting in noticeably lighter feel and sharper throttle response. The power improvement—around +2.2 hp—adds just enough zing without compromising smoothness
The exhaust tone is sublime: deep, refined, and distinctly Harley—but not deafening. It commands attention, yet remains balanced enough for long rides without wearer fatigue. I’ve received more than a few appreciative nods at stoplights—mission accomplished.

Minor nitpick? At ~$1,200 USD, it's a premium investment—but one that feels justified once you're riding with both style and presence
All in all, these ZARD Flat 4.33″ slip-ons delivered the perfect blend of performance, aesthetics, and sound. If you're looking to elevate your Street Glide Special, these might just be the best place to start.

When I first unboxed these ZARD Flat 4.33″ slip-ons, I was immediately struck by the craftsmanship—the stainless steel finish gleamed under the sunlight, and the billet aluminum end caps felt solid and premium, complete with that signature laser-etched Zard logo that speaks volumes about its Italian heritage
Installation was an absolute breeze—I had them bolted on within 45 minutes, no ECU remapping needed. The fit was snug and straightforward, exactly what you want for a bolt-on upgrade
On the road, the difference was immediate. The exhaust is noticeably lighter than stock, shaving off about 0.3 kg in the racing version. That weight reduction, combined with a power bump of around 2.2 hp, translates into a more responsive throttle and livelier mid-range performance
The tone is deep and commanding—not overwhelmingly loud, but assertive enough to make a presence known without hurting your ears on long rides. It strikes a perfect balance between aggressive and refined
My only reservation? The price tag—at just over $1,200 USD—it’s a premium heap of metal, and worth considering if you're serious about both style and performance
Overall, the ZARD Flat 4.33″ slip-ons blend Italian artistry with true Harley rumble. If you're seeking a high-end, plug-and-play exhaust that turns heads and sharpens your ride, this one delivers.

I recently upgraded my 2014 Harley-Davidson Street Glide Special with the ZARD “4.33 Inches” Slip-Ons Flat, and I couldn’t be more pleased with the transformation.

First impressions and build quality: These slip-ons are beautifully handcrafted in Italy using top-tier AISI 304 stainless steel. The matte black Cerakote finish and billet aluminum end caps—with the precise laser-etched ZARD logo—give my bike a sleek, custom aesthetic that draws attention wherever I ride.
Installation: I was pleasantly surprised—installation was incredibly straightforward. Bolted right onto the OEM exhaust, took well under an hour, and I didn’t need any ECU remapping to get them going.
Performance and weight gain: On the dyno, these slip-ons shed about 0.3 kg compared to stock, and delivered a solid +2.2 horsepower in the racing version—an upgrade you feel in real-world rideability.
Sound and ride feel: The exhaust gives my Street Glide Special a throaty, refined rumble—loud enough to turn heads but not so loud that it becomes tiring on long rides. The tone strikes the perfect balance between aggressive and comfortable for touring.
Added comfort: One pleasant surprise—less radiated heat on my right leg during extended rides. It’s a subtle yet noticeable benefit that makes long-distance cruising more enjoyable.
Final thoughts: The ZARD “4.33 Inches” Slip-Ons Flat are a premium upgrade in every sense—superior aesthetics, tangible performance gains, iconic sound, and better ride comfort. If you're riding a Street Glide Special from 2006 to 2016 and want to elevate both style and substance, these are absolutely worth it.

I upgraded my 2013 Harley-Davidson Street Glide Special with the ZARD Exhaust Slip-Ons Flat 4.33-Inch, and let me tell you—it’s been a game-changer.

From the moment I unpacked them, the quality was evident. These slip-ons are handcrafted in Italy using AISI 304 stainless steel and feature stunning billet aluminum end caps, available in both polished and matte black Cerakote finishes—stylish enough to turn heads at every stop
Installation was refreshingly simple: they bolt on directly to the OEM exhaust—no ECU remapping required—and I had everything set up in under an hour
After taking them for a spin, the bike felt noticeably livelier, with sharper throttle response and smoother acceleration. The racing version offers a 2.2 hp boost, while the homologated option still lands a respectable 1.2 hp gain—definitely a tangible improvement on the road
Sound-wise, these slip-ons nail the Harley vibe. Deep, throaty rumble that’s aggressive enough to demand attention yet refined enough for long-distance comfort—no ear fatigue here. Plus, I've found that the exhaust runs cooler, noticeably reducing heat transfer to my leg on extended rides—a welcomed bonus
In short: The ZARD Slip-Ons Flat 4.33″ are a high-end, performance-enhancing upgrade that delivers on aesthetics, sound, and ride feel—all while being easy to install. If you're looking to add both presence and polish to your Street Glide Special, these are absolutely worth it.

I installed the ZARD Exhaust Slip-Ons Flat 4.33-Inch on my 2012 Harley-Davidson Street Glide Special, and wow—what a transformation. From the moment I unpacked them, the craftsmanship commanded attention: handcrafted in Italy from top-grade AISI 304 stainless steel, polished to perfection, and capped with billet aluminum end pieces that bear the ZARD logo. The attention to detail is unmistakable.
Installation was refreshingly hassle-free. These slip-ons bolt right on, no ECU remap required—just unbolt the old pipes and you're good to go. I completed the swap in under an hour.
On the road, the performance gains are subtle yet satisfying. With the racing version, I noticed about +2.2 horsepower, giving the bike a noticeably crisper throttle response and a smoother pull—especially when merging onto the freeway.
The homologated version offers a slight compromise (about +1.2 hp), but still delivers a nice performance upgrade.
Sound-wise, these slip-ons deliver a deep, rich rumble—the kind of refined Harley growl that turns heads without overwhelming the helmet or echoing too loudly on long stretches.
An added bonus I genuinely appreciated: reduced heat transfer to my right leg during extended rides. My every long-haul just got more comfortable.
In summary: the ZARD Slip-Ons Flat 4.33 are a beautifully crafted, performance-enhancing upgrade that adds both sonic character and visual flair to the Street Glide Special—all while being as easy to install as they are effective.