Sphere Expert


  • 6061 Alloy butted 27.5+ frame
  • Manitou Machete 27.5``+. 120mm Travel
  • WTB Scraper i40 27.5+ tubeless wheels
  • Weight: 12.9kg
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The 27"5+ Sphere is designed to be an all-day, all-terrain hardtail. From bikepacking to trails, Sphere offers a comfortable, confidence-inspiring ride. Shorter chainstays mean agile handling and modern geometry which adds to its well-mannered demeanour. The Sphere is a highly capable trail platform that makes the most of plus tyres.
Mountain bike - Sphere Expert - Silverback Bikes

Your Better Riding Experience


Shock Pumps

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EN Saddle

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Trail Shirt

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Enduro Grips

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Crankset RaceFace Aeffect. 30T. XS/S: 170mm. L: 175mm All Sizes. Black
Cassette Shimano SLX CS-M7000. 11 Speed. 11-42T. Silver
Rear Der Shimano Deore XT RD-M8000 Shadow Tech Plus. Long Cage. 11 Speed. Black
Shifters Shimano SLX SL-M7000-11. 1x11 Trigger. Black
Fork Manitou Machete 27.5``+. 120mm Travel. 1.5``T Alloy. 32mm Straightwall. Alloy Black Stanchions. 110x15mm Dropout. Hexlock SL 15. ABS+. Externally Adjustable Compression to Lockout and Rebound. Internal Shim Stack High Speed Damping. Plus Tune
Hubs Front: Shimano Deore HB-M618-B. Centre Lock. 32H.15mm Thru Axle. OLD:110mm Rear: Shimano Deore FH-M618-B. Centre Lock. 11-Speed. 12mm Thru Axle. 32H. OLD:148. Black
Rims WTB Scraper i40 27.5. 32 hole drilling. Disc Only. Pre Ano Black. 4D Drilling. WT-69 Series Alloy. PV drilled. Sleeved Construction. TCS Tubeless Ready
Tyres Maxxis Rekon 27.5``x 2.8``. EXO Sidewall. Tubeless Ready
Seatpost Sector Level. 6061 Alloy. Dia 31.6mm. XS/S: 350mm. M: 350mm. L/XL: 400mm. Black
Saddle Sector. Cromo Rails
Handlebar Sector Plane. W: 720mm. Back Sweep: 9 x Dia 31.8mm. 6061 Double Butted Oversized
Stem Sector Box. 6061 Alloy. S/M: 60mm. L/XL: 75mm. 6 x Dia 31.8mm. Black
Frame 27.5"+ Butted 6061 Aluminium. Tapered 1-1/8" - 1.5"Headtube. 12 x 148mm. SBC 12mm Thru Axle Dropouts
Brake set Shimano BL/BR-M315. Open Hydraulic System. Rotors Front: 180mm. Rear: 160mm. Centre Lock. Black
Weight 12.90kg
Weight Limit 120kg
Travel 120mm

Sphere Expert Geometry
Map Type XS S M L XL
A SEAT TUBE C/T 370 400 440 480 520
B HEAD TUBE ANGLE 68˚ 68˚ 68˚ 68˚ 68˚
C SEAT TUBE ANGLE 73˚ 73˚ 73˚ 73˚ 73˚
D TOP TUBE 557 578 608 630 652
E REACH 370 391 421 440 456.5
F CHAINSTAY LENGTH 422 422 422 422 422
G BB HEIGHT 315 315 315 315 315
H WHEELBASE 1070 1091 1121 1144 1168
I HEAD TUBE LENGTH 90 90 90 100 120
J STACK 611.8 611.8 611.8 621 639.6



  1. Rob Griffiths

    I love riding hardtails and I love my sphere for steep/technical trails. Climbs like an XC bike, descends like an enduro with slack head angle and wide tyres.

  2. Dawie Venter

    Feedback of my time with my Silverback Sphere 1, Size Medium, bought October 2018 (suspect it was a 2016 model on sale).

    What I liked about the bike:
    Very good value for money package
    Paint finish is superb
    Frame welding is very neat
    Overall bike weight is good
    Frame geometry is fine, fun to ride and easy to handle
    Clearance between the tires and the frame is very good, allowing sufficient clearance for mud caking on tires
    Fork handles well and really smooth
    I particularly liked the 50mm Sun Ringle Mulefut Rims, allowing the fitment of different tire width options
    The 29+ format is great in sandy and muddy conditions and provides confidence in gnarly conditions
    The SRAM shifting is super slick and the ability to move up two cogs with one click in an emergency has proven priceless
    The 1 x 11 drive is good and adequate most of the time. (At times I would have liked one additional low-gear or even a 2 x 11 setup)
    Brakes are great
    Versatile bike, suitable for a variety of off-road terrains. I wouldn’t consider it a racer, but racing is not my scene, thus would have liked the ability to add racks etc for short exploratory excursions.

    What I don’t like about the bike:
    The paint protection film on the frame is a good idea, but has poor adhesion as water gets underneath the transparent film and causes it to blister along the edges
    There are no braze-ons or threaded holes to mount a bike rack
    There are no mounting points for a second water bottle or tool storage container
    The saddle is rock-hard and I find it very uncomfortable

    What I changed on the bike:
    Fitted a Brooks B17 saddle
    Fitted a comfortable FSA Metropolis handle bar
    Fitted Ergon comfort grips

    Distance traveled with my “new” Silverback Spere: 972km
    Distance traveled with my Silverback Double Scooop Deluxe: 3,585km
    Distance traveled with my Titan 27.5 Carbon MTB: 4,127km

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