We have had our bicycles 5 years and taken them on a number of tours covering around 10000 miles. Below are all the parts used to build them. I have put some links for any parts I ended up hunting around the internet to find a supplier for them.
Janet’s Surly Troll

• Frame Surly Troll size S (16″) in Black Westbrook Cycles
  • Fork stem has been left uncut gives a nice comfortable riding position
• Wheels Front 26″
  • 36 spokes Rigid Andrea 30 rim
  • Son 28 hub (6 hole disc)
• Wheels rear 26″
  • 32 spokes Rigida Andrea 30 rim
  • Rohloff 500/14 TS DB OEM (disc brake solid axle external cable box)
  • The wheels hand-built by SJS Cycles
• Rear rack Tubus Cargo Black Rose Bikes
• Tyres Schwalbe Marathon Greenguard 26 x 1.5
• Crank and Bottom Bracket
  • Bottom Bracket Shimano UN55 square taper 122.5 x 73
  • Crank arms Middleburn RS7 170mm RJC X-treme
  • Middleburn self extracting bolts RJC X-treme
  • Middleburn mono spider 4 arm 104BCD RJC X-treme
  • Specialities TA 38T single speed chainring 104BCD BMO , this when worn out was replaced by the SJS own brand 38T 104 be aware it did not fair the spider and needed grinding to suit.
  • I found this setup gave a nice straight chainline
• Chain KMC X1 Silver (1/2 x 3/32) Internal Gear Hub
• Pedals DMR V8
• Headset Hope Conventional 1 1/8″
• Stem Hope XC 90mm 10 degree rise 1 1/8″ to 31.8
• Bars Jones Loop Bars 710mm Sideways Cycles
• Grips Ergon GC1 Black for Rohloff
• Seatpost Suntour SP12-NCX Suspension (medium) 27.2mm diameter Bike Discount
• Brakes
  • Front Disc 6 hole Avid 180mm BB7
  • Rear Disc 4 hole Rohloff 160mm BB7
  • Levers Shimano BL-R780
  • Brake cable TRP compressionless
• Front Rack Tubus Duo
• Mudguards SKS P55 Chromoplastic
• I needed to purchase a flat stainless steel plate to get the front mudguard to fit correctly (ebay)
• Saddle Selle Italia Lady Gel Flow

Chain line with the 122.5 bottom bracket

Martin’s Surly Troll

• Frame Surly Troll size L (20″) in Purple Nurple Westbrook Cycles
  • Fork stem has been left uncut gives a nice comfortable riding position
• Wheels Front 26″
  • 36 spokes Rigid Andrea 30 rim
  • Son 28 hub (6 hole disc)
• Wheels rear 26″
  • 32 spokes Rigida Andrea 30 rim
  • Rohloff 500/14 TS DB OEM (disc brake solid axle external cable box)
  • The wheels hand-built by SJS Cycles
• Rear rack Tubus Cosmo Stainless Steel Rose Bikes
• Tyres Schwalbe Marathon Greenguard 26 x 1.75
• Crank and Bottom Bracket
  • Bottom Bracket Shimano UN55 square taper 118 x 73
  • Crank arms Middleburn RS7 175mm RJC X-treme
  • Middleburn self extracting bolts RJC X-treme
  • Middleburn dual spider 5 arm 110BCD SJS Cycles
  • Specialities TA 38T single speed chainring 110BCD BMO replaced by SJS own brand 38T 110 which fitted perfectly.
  • I found this setup with the chainring mounted on the inner face of the spider gave a nice straight chainline

• 
• Chain KMC X1 (1/2 x 3/32) Silver Internal Gear Hub
• Pedals DMR V8 flats
• Headset Hope Conventional 1 1/8″
• Stem Thompson Elite X4 110mm 10 degree rise 1 1/8″ to 31.8
• Bars Soma Osprey
• Grips Ergon GC1 Black for Rohloff
• Seatpost Nukeproof Warhead inline 27.2mm diameter
• Brakes
  • Front Disc 6 hole Avid 180mm BB7
  • Rear Disc 4 hole Rohloff 160mm BB7
  • Levers Avid Speed Dial 7
  • Brake cable TRP compressionless
• Front Rack Tubus Duo
• Mudguards SKS P65 Chromoplastic
• I needed to purchase a flat stainless steel plate to get the front mudguard to fit correctly (ebay)
• Saddle Selle Italia Man Gel Flow