If you ride a Surron Ultra Bee and wish it fit you better — you’re not alone. The Ultra Bee is already shorter and lighter than the big electric dirt bikes, but for a lot of riders (especially shorter or newer ones), it can still feel tall and intimidating at stops. Sirris, the suspension specialists known for high-end tuning on Surron, Talaria, and Ultra Bee platforms, have a solution.
Meet the Sirris Ultra Bee Lowering Kit — a $100 parts kit (or $195 with factory installation) that drops the bike 28mm front and rear without compromising suspension performance.
What It Is
The lowering kit is purpose-built for the Ultra Bee’s F43 fork and R46 rear shock — the same components Sirris tunes for their Trail and MX suspension packages. It’s not a hack or a spacer jammed in there. It’s a properly engineered system:
- Front (31mm drop): Upgraded seal head + spring spacers
- Rear (9mm drop): Shock spacers installed between the seal head and piston
- Compatible with: Sirris Trail Tune and MX Tune suspension setups
- Requires: Full suspension rebuild (handled in-house by Sirris)
If you already have Sirris suspension on your Ultra Bee, you can buy the kit-only for $100 and have an authorized service center do the install. If you’re ordering fresh suspension, add the labor for $95 total and Sirris handles everything before shipping — dialed, set up, bolt-on ready.
Why It Matters
Sirris brought in snowmobile legend Chris Burandt and his daughter Kinley to put the kit through its paces — and that’s where the real story shows up. The video (The Ultimate Package | Burandts X Sirris) makes the case better than any spec sheet.
Kinley, a shorter rider, goes from tiptoeing at stops to being fully planted. The difference is immediate: smoother starts, better balance, more confidence in technical terrain. It’s the kind of mod that doesn’t change the bike’s personality — it unlocks the rider’s.
For shorter riders, newer riders, or anyone who rides tight trails where putting a foot down matters, lowering by 28mm makes a real difference. Lower center of gravity also means better stability through corners and rough stuff. You’re not sacrificing suspension travel or ride quality — just bringing the bike closer to the ground.
Pricing & Value
At $100 for the parts alone, this is a no-brainer if you already run Sirris suspension. At $195 with factory installation on a new suspension setup, it’s still reasonable — especially given that it requires a full rebuild and proper tuning. Having trained technicians do it right beats trusting your local shop to figure it out.
Pricing breakdown:
- Lowering kit only: $100
- With factory installation: $195
- Lead time: ~1 week for custom installation
The Bottom Line
The Sirris Ultra Bee Lowering Kit is a well-engineered solution to a real problem. It’s not a gimmick or a compromise — it’s a proper suspension mod that makes the Ultra Bee accessible to more riders without cutting corners. If the Ultra Bee is a half-size too tall for you, this is the fix.
