👑 SIRRIS R46 SX TUNE | LSC REAR SHOCK | Sur Ron Ultra Bee ⚡

Supercross grade damping and an SX firm bottom out bumper. The hardest hitting shock Sirris build for the Ultra Bee 🔥

The R46 SX Tune is the rear end that belongs under the F43 SX fork. Firmer valving, HNBR seals and an SX specific firm MCU bottom out bumper designed to survive landings that destroy normal shocks.

Both weight options run the same 115 N/mm spring, with the difference coming from the clicker settings Sirris ship it on. This is a race shock aimed at advanced and pro level riders.

⚙️ Key Specifications

• 🏗️ Architecture: Piggyback, steel spring
• 📏 Stroke: 84.2 mm
• 📐 Length: 320 mm
• ⚖️ Weight: 3.9 lbs / 1.76 kg (without spring)
• 🔵 Piston: High flow Ø46 mm, CNC 6061 billet aluminium, type 3 hard anodised
• ⭕ Piston Band: Hard band
• 🔩 Shaft: Ø16 mm OD chrome plated, induction hardened steel, hollow, Ø5.5 mm ID
• 🛡️ Shock Body: Seamless 6061 aluminium, type 3 hard anodised, ACME thread
• 🔧 Spring Retainer: Seamless 6061 aluminium, type 3 hard anodised, ACME thread, locking feature, manual adjust
• 🧱 Bottom Out: SX firm MCU bumper
• 🪶 Top Out: Rubber bumper
• 💧 Damping: Tunable compression and rebound, SX valving
• 🛢️ Reservoir: Pressurised with floating piston
• 🎛️ Adjusters: External LSC compression and rebound
• 🧴 Seals: HNBR

🏋️ Rider Weight Ranges

Two options. Listed weights are rider weight without riding gear, with 15 lbs of gear already factored into the ranges.

• 🔵 Light (under 160 lb): 115 N/mm spring
• 🔴 Medium (over 160 lb): 115 N/mm spring, different clicker settings

📦 What's Included

• ✅ Sirris R46 SX Tune rear shock
• ✅ 115 N/mm steel spring
• ✅ Pressurised piggyback reservoir, factory charged
• ✅ Fitting hardware

🚀 Why Choose The R46 SX Tune?

• 🧱 SX firm bottom out bumper. The single biggest difference on hard landings
• 🧴 HNBR seals. Higher heat and wear tolerance than the standard NBR used on the Trail and MX
• 👑 Pairs with the F43 SX. Front and rear developed to work as one race package
• 💪 Ø46 mm high flow piston. Massive oil flow for true moto level damping control
• 🛢️ Pressurised reservoir. Consistent damping through a full session
• 🎛️ Fully adjustable. External compression and rebound so you can fine tune at the track

⚠️ Important — Please Read Before Ordering

🛠️ Made to order. Every R46 SX is built and sprung to your selected weight range. These are not held as generic stock items.

⏱️ Build time: approximately 5 to 20 working days.

🚚 Shipping time: approximately 5 to 10 working days depending on destination.

📅 Total estimated lead time: approximately 2 to 6 weeks from order. These are estimates and are not guaranteed.

🚫 Once your build has entered production, the order is non cancellable and non refundable due to the bespoke spring rate, valving and labour involved.

🏁 This is a race product. The SX Tune is intended for advanced and pro level riders and will feel firm for trail and general use. If you are unsure, the Trail or MX Tune is the better buy and we will tell you that honestly.

💬 We will keep you updated at every stage, from build confirmation through to dispatch.

📮 Order Tracking & Updates

Full tracking is issued the moment your shock leaves us. Once the parcel is with the courier, transit times are outside of our control and occasional courier delays can happen, particularly on international shipments. International customers may be responsible for any duties and taxes charged on import.

❓ Got Questions?

Not sure if the SX is right for you? Message us before you order. We ride these bikes and we set this suspension up, so we will point you at the right spec rather than just take the sale 👊

Sirris R46 SX Tune. The last word in Ultra Bee rear suspension 👑⚡

Shop now at WGTracing.store 🔥