Sirris R46 MX Tune Shock | Surron Ultra Bee

Surron Ultra Bee - Sirris R46 MX Tune Shock The R46 for Surron Ultra Bee is here—built to unlock your bike’s full potential. Pressure balanced, fully adjustable, and optimized for E-Moto, the Sirris R46 MX Tune Shock is the perfect rear match to the F43 fork. Together, they create the ultimate suspension package for riders who demand motocross performance. The MX Tune is firm, aggressive, and built to handle motocross abuse—huge jumps, endless whoops, and race-speed cornering. You’ll give up a little trail plushness, but gain maximum control and bottoming resistance when it matters most. Pair with the F43 MX Fork for the ultimate setup! MAKE SURE YOU ALSO PURCHASE A SIRRIS TRIANGLE TO PROVIDE PROPER CLEARANCE Advanced Tuning Options 🛠 LSC (Low Speed Compression): Superior pressure balance and frequency response for unmatched predictability. Optional 2SC (coming soon): Wider adjustment range, fits the same cavity, cross-compatible with a rebuild. Built to Last ⚡ Durable Finishing: Type 3 hard anodized body, reservoir, and hardware. Induction heat-treated, hard chrome hollow shaft for strength. Serviceability: Fully rebuildable design makes tuning, maintenance, and long-term ownership simple. Longevity: Built to stay looking new—even after thousands of miles. Why Choose the MX Tune 🏁 Motocross-Specific Setup – Tuned for speed, stability, and control Bottoming Resistance – Confidence on g-outs and big landings Fully Adjustable – Compression & rebound to dial in your ride Exceptional Responsiveness – LSC pressure balance ensures predictability lap after lap Built for E-Moto – Engineered to take on the demands of the Ultra Bee MX Tune is a motocross specific tune with balance, control, and bottoming resistance for the fastest speeds. It's firm suspension for maximum control and support for huge jumps, whoops and fast cornering. If you select the EBMX or MX spec, you’ll compromise a bit of trail plushness for improved bottoming resistance. RIDER WEIGHT SPECS: Sirris offers five weight ranges to choose from when selecting your MX Tune R46 shock. (Listed weight ranges are rider weight without riding gear on. 15 pounds of riding gear is calculated into the weight ranges) 120 lbs - 160 lbs (Light ships with 85 N/mm spring) 160 lbs - 200 lbs (Medium ships with 95 N/mm spring) 200 lbs - 240 lbs (Heavy ships with 105 N/mm spring) 240 lbs - 280 lbs (X Heavy ships with 115 N/mm spring) 280 lbs - 320 lbs (XX Heavy 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