🏁 SIRRIS R46 MX TUNE | LSC REAR SHOCK | Sur Ron Ultra Bee ⚡

A motocross specific tune with balance, control and bottoming resistance for the fastest speeds 🔥

The R46 MX Tune is firm suspension for maximum control and support over huge jumps, whoops and fast cornering. Pick this over the Trail Tune and you trade a little plushness for a big gain in bottoming resistance. If your Ultra Bee spends its life on a track, this is the shock.

Same piggyback R46 platform with a high flow Ø46 mm billet piston, pressurised reservoir and a 16 mm hollow chrome shaft, valved for race pace. The direct partner to the F43 MX Tune fork.

⚙️ Key Specifications

• 🏗️ 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 aluminium, type 3 hard anodised
• ⭕ Piston Band: Hard band
• 🔩 Shaft: Ø16 mm OD chrome plated, induction hardened steel, hollow
• 🛡️ Shock Body: Seamless 6061 aluminium, type 3 hard anodised
• 🔧 Spring Retainer: Seamless 6061 aluminium, manual adjust with locking feature
• 🧱 Bottom Out: MCU bumper
• 🪶 Top Out: Rubber bumper
• 💧 Damping: Tunable compression and rebound, MX valving
• 🛢️ Reservoir: Pressurised with floating piston
• 🎛️ Adjusters: External LSC compression and rebound
• 🧴 Seals: NBR

🏋️ Rider Weight Ranges & Spring Rates

Five spring options so the shock is sprung correctly for your weight straight out of the box. Listed weights are rider weight without riding gear, with 15 lbs of gear already factored into the ranges.

• 🟢 Light (120 to 160 lb): 85 N/mm spring
• 🔵 Medium (160 to 200 lb): 95 N/mm spring
• 🟡 Heavy (200 to 240 lb): 105 N/mm spring
• 🟠 X Heavy (240 to 280 lb): 115 N/mm spring
• 🔴 XX Heavy (280 to 320 lb): 115 N/mm spring

📦 What's Included

• ✅ Sirris R46 MX Tune rear shock
• ✅ Steel spring matched to your selected rider weight range
• ✅ Pressurised piggyback reservoir, factory charged
• ✅ Fitting hardware

🚀 Why Choose The R46 MX Tune?

• 🛬 Bottoming resistance. Built to take big landings without smashing through the stroke
• 🌊 Whoop control. Firm, supportive damping that keeps the back end tracking straight at speed
• 🎯 Corner harder. Holds the bike up in the stroke so it stays balanced through ruts and berms
• ⚡ Matches your fork. Designed to run with the F43 MX Tune so the bike works as one package
• 🛠️ Sprung for you. Five spring rates covering 120 to 320 lb, so no expensive respring after purchase
• 🏆 Moto grade build. Hard anodised 6061 body and a 16 mm induction hardened shaft

⚠️ Important — Please Read Before Ordering

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

⏱️ Build time: approximately 5 to 15 working days.

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

📅 Total estimated lead time: approximately 2 to 5 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.

💬 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 whether MX or Trail suits your riding? 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 MX Tune. Built for riders who send it and land it ⚡🏁

Shop now at WGTracing.store 🔥