Sirris R46 Trail Tune Ultra Bee Shock

Sirris R46 Trail Tune Ultra Bee Shock – Ride Fast, Ride Everywhere

Conquer every trail with confidence using the Sirris R46 Trail Tune Ultra Bee Shock, engineered for riders who demand versatility, speed, and superior comfort. The Trail Tune delivers a perfect blend of sportiness and support, built to perform across all terrains from technical climbs to high-speed descents.

This shock is your go-to upgrade for all-around performance, offering responsive handling and precise damping that keeps your Ultra Bee stable, smooth, and in full control. Whether you’re exploring rugged off-road trails or pushing limits on faster terrain, the R46 Trail Tune adapts seamlessly to your riding style.

Rider Weight Specs

Sirris offers six rider-specific weight ranges to ensure perfect balance, spring rate, and shock performance.
(Listed weights exclude riding gear — 15 lbs of gear weight is already factored into these ranges.)

• LIGHT: 59 – 72 kg / 130 – 160 lbs → (Ships with 75 N/mm spring)

• MEDIUM: 72 – 95 kg / 160 – 210 lbs → (Ships with 85 N/mm spring)

• HEAVY: 95 – 105 kg / 210 – 230 lbs → (Ships with 90 N/mm spring)

• X HEAVY: 105 – 114 kg / 230 – 250 lbs → (Ships with 95 N/mm spring)

• XX HEAVY: 114 – 127 kg / 250 – 280 lbs → (Ships with 105 N/mm spring)

• XXX HEAVY: 127 – 158 kg / 280 – 350 lbs → (Ships with 115 N/mm spring)

Each option is precision-tuned to deliver optimal support and bottoming resistance for your specific weight range.

Product Specifications

• Architecture: Piggyback, steel spring

• Stroke: 85 mm

• Length: 320 mm

• Weight: 3.9 lbs / 1.76 kg (without spring)

• Piston: Ø46 mm high-flow CNC 6061 billet aluminum, Type 3 hard anodized coating

• Piston Band: Hard band

• Shaft: Ø16 mm OD chrome-plated, hollow steel, induction hardened, Ø5.5 mm ID

• Shock Body: Seamless 6061 aluminum, Type 3 hard anodized coating, ACME thread

• Spring Retainer: 6061 aluminum, 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 controls

• Seals: NBR

Why Choose the Sirris R46 Trail Tune from eBikePartsNZ?

When you buy from eBikePartsNZ, you’re getting more than just premium parts — you’re getting trusted performance, expert advice, and fast support from New Zealand’s e-bike specialists.

✅ 100% genuine Sirris product
✅ Tuned for trail and adventure performance
✅ Perfect fit for Surron Ultra Bee
✅ Fast local shipping
✅ Friendly, knowledgeable support team