Ultra Bee Sirris R46 Trail Tune Shock
Free Shipping
Free Shipping
At Ampd Bros, we make delivery fast, simple and affordable.
- 🚚 FREE Shipping on all orders over $100 Australia-wide including Ampd Bros E-Bikes!
- 💲 Flat $9.95 shipping for orders under $100.
- ⚡ Order before 12pm (AEST) and your order will be dispatched the same business day!
Oversized & Remote Deliveries
For larger Motorcycles over 50kg — such as SurRon & RFN Motorbikes — a $199 freight fee applies to WA, TAS, and NT.
Remote areas (like Broome, Lord Howe or Kangaroo Island) may incur additional fees or service limitations. If delivery isn’t possible, we’ll contact you before dispatch to arrange alternatives.
Delivery Times
Typical delivery is 2–14 business days, depending on your location and carrier schedules (excluding public holidays and peak periods).
Important Notes
- Please ensure someone is available to receive your order to avoid re-delivery fees.
- All orders are securely boxed, but bikes and large items may require minor assembly. Visit our Assembly Page for help or contact your local Ampd Bros dealer (assembly fees may apply).
- We cannot ship large items to P.O. Boxes or Parcel Lockers — small items will ship via AusPost.
International Orders
For international shipping, please check prices at checkout or contact us for a quote. All rates are in AUD and exclude local import taxes or duties.
For full details, please refer to our Shipping Page or contact us.
Fast Easy Returns
Fast Easy Returns
Fast, easy returns for eligible new and un-used items purchased within 30 days. Our friendly team can also assist you with the return of your item. Check out our Returns Page for full T&C's as well as eligible items.
Comprehensive Warranty
Comprehensive Warranty
Here at Ampd Brothers we stand behind all our products nation wide regardless of where you live so you can rest assure knowing your purchase comes backed by a renowned Aussie Family Owned Brand.
Warranty Periods:
- 2 Year's on Ampd Bro's Adult Electric Bike Models
- 1 Year on Kids Electric Bikes (EVO Racing & Lil Rippa)
- 1 Year on RFN Motorcycles
- 1 Year on Surron Light Bee, Hyper Bee & Ultra Bee
- 6 Months on Surron Storm Bee
- 6 Months on Vortex Skateboards
- 6 Month's on Products Sold as "Ex-Demo" or "Ex-Display" items
- 3 Months on Refurbished or Repaired Products
- 3 Month's on any Parts, Accessories & Bike Trailers*
Our Extensive Warranty applies Australia Wide for all our products. *T&C's Apply for full information on our Warranty Click Here.
The Ampd Bros Difference
The Ampd Bros Difference
Why Choose Ampd Bros® Electric Bikes?
The Original Aussie Family Owned Brand
Proudly 100% Australian and family-owned, Ampd Bros was founded in 2019 with a mission to redefine the electric bike experience. Since then, over 40,000 Aussies have joined the Ampd Bros family, trusting our commitment to premium quality, craftsmanship and real customer care. When you ride with us, you’re supporting a local brand built on passion, integrity and community.
Expert Support and Unmatched Service
With more than 1,500 verified five-star reviews, our reputation speaks for itself.
Our team of industry-trained experts is available five days a week to offer personalised, knowledgeable support — whether you’re buying your first e-bike or looking to upgrade your ride. With nationwide sales and support across 80+ locations, up to 2-year's warranty on our bikes and responsive aftersales service, Ampd Bros ensures every rider enjoys complete confidence with every purchase.
Innovation and Performance
As Australia's First and Original Aussie fat bike brand, we are pioneers in pushing the boundaries of design and performance. Our products are crafted in conjunction with the industry's top experts, ensuring every ride is both reliable and exhilarating. With Premium 21700 Samsung battery cells that are 30% larger than those of other brands, our bikes deliver unmatched power and longevity.
Convenience and Reliability
We know how important it is to stay on the road (or off it). That’s why we stock a full range of spare parts year-round and offer Fast & Free Delivery Australia-wide over $100. Every model is tested, proven and refined to deliver years of dependable performance. Plus, with interest-free finance for up to 36 months, you can ride now and pay later — without compromise.
Inspiring Bold Adventures
At Ampd Bros, our mission is simple: to inspire Aussies to Ride Bold and Beyond Ordinary. From beach cruisers to rugged fat bikes, our community of 40,000+ riders continues to grow — united by a love for adventure and the freedom that comes with every Ampd Bros ride.
Join the Ampd Bros Family
Experience the difference of riding with a brand that’s Aussie-owned, battle-tested, and customer-trusted. Backed by 1,500+ five-star reviews, a thriving national community and a passion for premium performance — it’s easy to see why more Australians choose Ampd Bros every year.
Ride bold. Ride Ampd Bros.
Description
Description
Trail Tune is a very versatile and aggressive tune that is sporty and supportive, designed to go fast over a wide variety of terrain.
RIDER WEIGHT SPECS:
Sirris offers six weight ranges to choose from when selecting your Trail Tune R46 shock. (Listed weight ranges are rider weight without riding gear on. 15 pounds of riding gear is calculated into the weight ranges)
LIGHT 59 - 72kg / 130 lbs - 160 lbs (ships with 75 N/mm spring)
MEDIUM 72 - 95kg / 160 lbs - 210 lbs (ships with 85 N/mm spring)
HEAVY 95kg - 105kg / 210 lbs - 230 lbs (ships with 90 N/mm spring)
X HEAVY 105 - 114kg / 230 lbs - 250 lbs (ships with 95 N/mm spring)
XX HEAVY 114 - 127kg / 250 lbs - 280 lbs (ships with 105 N/mm spring)
XXX HEAVY 127 - 158kg / 280 lbs - 350 lbs (ships with 115 N/mm spring)
PRODUCT SPECS:
Architecture
Piggyback, steel spring
Stroke
85 mm
Length
320 mm
Weight
3.9 lbs / 1.76 kg without spring
Piston
High flow Ø46 mm, CNC 6061 billet aluminum, type 3 hard anodized coating
Piston band
Hard band
Shaft
Ø16 mm OD chrome-plated, induction hardened steel, hollow, Ø 5.5 mm ID
Shock body
Seamless 6061 aluminum, type 3 hard anodized coating, ACME thread
Spring retainer
Seamless 6061 aluminum, type 3 hard anodized coating, ACME thread, with locking feature, manual adjust
Bottom out
MCU bumper
Top out
Rubber bumper
Damping
Tunable compression and rebound
Reservoir
Pressurized with floating piston
Adjusters
External compression and rebound adjustment
Seals
NBR
Reviews (0)
Reviews (0)
Ride Bold, Ride the Best.
The O.G Aussie Family Bike Brand Since 2019. #AMPDBROS
F43 Forks
R46 Shocks
Sirris FAQ's
Product Help
Sirris Suspension Owners Manual
Sirris Suspension Owners Manual
OWNER'S GUIDE
Follow the guidelines and instructions provided in this owner’s guide so that you are able to properly set up, use, and maintain your new Sirris suspension products.
Installation Videos
Installation Videos
Break-In Period Note
Break-In Period Note
The Sirris F43 fork is a symmetrical closed cartridge design with two independent sealed dampers. It will break-in over the first 5 hours of use with significant improvements in friction.We recommend that you don’t make significant changes to clicker positions or valving until after the 5 hour break-in period.
Sirris 2 Year Warranty
Sirris 2 Year Warranty
LIMITED WARRANTY INFO
Your Sirris fork and shock are warrantied against manufacturing defects for a period of 2 years. Normal wear and regular maintenance are not covered.
Sirris makes the following LIMITED WARRANTY with respect to its suspension products:
LIMITED TWO (2) YEAR WARRANTY ON SUSPENSION PRODUCTS
Subject to the limitations, terms and conditions hereof, Sirris warrants, to the original retail owner (consumer) of each new Sirris suspension product, that the Sirris suspension product, when new, is free from defects in materials and workmanship. This limited warranty expires two (2) years from the date of the original Sirris suspension product retail purchase from an authorized Sirris dealer or from a Sirris authorized Original Equipment Manufacturer where Sirris suspension is included as original equipment on a purchased vehicle.
TERMS OF WARRANTY
This limited warranty is conditioned on the Sirris suspension product being operated under normal conditions and properly maintained as specified by Sirris. This limited warranty is only applicable to Sirris suspension purchased new from an authorized Sirris source and is made only to the original retail owner (consumer) of the new Sirris suspension product and is not transferable to subsequent owners.
Should it be determined, by Sirris in its sole and final discretion, that a Sirris suspension product is covered by this limited warranty, it will be repaired or replaced, by a comparable model, at Sirris’s sole option, which will be conclusive and binding. THIS IS THE EXCLUSIVE REMEDY UNDER THIS LIMITED WARRANTY. ANY AND ALL OTHER REMEDIES AND DAMAGES THAT MAY OTHERWISE BE APPLICABLE UNDER THIS LIMITED WARRANTY ARE EXCLUDED, INCLUDING, BUT NOT LIMITED TO, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR PUNITIVE DAMAGES.
This limited warranty does not apply to normal wear and tear, malfunctions or failures that result from abuse, neglect, improper assembly, alteration or modification, improper or unauthorized repair or maintenance, crash, accident or collision, or other abnormal, excessive or improper use.
THIS IS THE ONLY WARRANTY MADE BY SIRRIS ON ITS SUSPENSION PRODUCTS AND COMPONENTS, AND THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION HEREIN. ANY WARRANTIES THAT MAY OTHERWISE BE IMPLIED BY LAW INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXCLUDED.
For questions regarding this warranty or Sirris products please email info@ridesirris.com, or visiting www.ridesirris.com.
When making a claim under this Limited Warranty you will be required to provide to an authorized Sirris Service Center:
1. The Product (or the affected part) and
2. A copy of the original proof of purchase, which clearly indicates the name and address of the seller, the date and place of purchase, the product part number and if utilized, a serial number. If Sirris products are sold as part of a complete motorcycle, the motorcycle brand, model, model year, and serial number should be included.
Service Intervals
Service Intervals
BREAK-IN PERIOD NOTE: The Sirris F43 fork is a symmetrical closed cartridge design with two independent sealed dampers. It will break-in over the first 5 hours of use with significant improvements in friction. We recommend that you don’t make significant changes to clicker positions or valving until after the 5 hour break-in period. To best maintain the performance and durability of your product under normal use, Sirris recommends that you have regular fork and shock maintenance performed according to the service intervals listed below.
It is important to remember that service intervals can vary depending on climate, trail conditions and riding frequency. Servicing your suspension requires special knowledge and tools. If you are unsure about working on your own suspension, contact your authorized Sirris Dealer for more information on general suspension maintenance.
Failure to follow these recommendations could affect your warranty.
Long term non-use: If the motorcycle has been sitting unused for more than one year, complete inspection is necessary and maintenance is recommended.
WARNING: Modification, improper service, or use of aftermarket replacement parts with Sirris forks and shocks may cause the product to malfunction, resulting in SERIOUS INJURY OR DEATH. DO NOT modify any part of a fork or shock, including the fork clamps, steerer, upper and lower leg tubes, or internal parts, except as instructed herein. Any unauthorized modification may void the warranty, and may cause failure or the fork or shock, resulting in SERIOUS INJURY OR DEATH.
WARNING: Sirris products should be serviced by a qualified service technician, in accordance with Sirris specifications. If you have any doubt whether or not you can properly service your Sirris product, then DO NOT attempt it. Improperly serviced products can fail, causing the rider to lose control resulting in SERIOUS INJURY OR DEATH.
Shipping
What countries do you ship to?
What countries do you ship to?
We currently ship to the Australia and New Zealand. However we can ship to any country. For accurate pricing please email us along with your address and order information to: info@ampdbros.com
How long will it take to receive my order?
How long will it take to receive my order?
All Sirris Suspension is custom tuned to your ride style and weight. While we do our best to carry as much stock as possible, some orders may be required to be 'made to order' and delivery can take a minimum of 2 weeks (for Australian orders, international orders may be longer). To confirm availability please contact our team.
SHOP ALL SIRRIS
View AllGear Up
View All
Apparel Built for the Bold
Secure our newest merch engineered for riders who demand more. Use Code "MERCH" for 25% off on orders $200+













