The Moorespeed BMW R100GS

The concept was to produce the ‘ultimate’ version of this classic air-cooled twin, based as closely as reasonably possible upon the Paris-Dakar racers of the late 1980s – but with more power and practicality. While the final specification will depend on the customer’s requirements, the ‘production’ version is as highlighted below.

While Moorespeed can produce a complete ground-upwards total rebuild of your donor machine, virtually all items can also be supplied enabling enthusiasts to build their own ‘ideal’ version.

Front forks

  • Paioli/Kayaba 46mm upside-down front forks with 300mm travel and adjustable for both damping and preload
  • Brembo two-piston caliper and 320mm dia. wavy brake disc
  • Talon hub laced to Excel rim with stainless steel spokes/nipples

Chassis

  • Comprehensively braced main frame with laser-cut steel plates welded in place
  • Custom oil cooler mounted below steering head
  • Rear sub frame is substantially shorter and slimmer than stock with additional bracing and incorporates rear carrier
  • Monolever swingarm replaces paralever, and (together with the drive shaft) is lengthened
  • Wilbers shock absorber with variable damping
  • Shock absorber’s bottom mount moved from rear hub to swing arm to give longer suspension travel
  • Centre stand modified to suit

Engine

  • Total engine rebuild, including all external surfaces bead blasted to as-new appearance
  • Wide choice of tuning options include: Moorespeed/Omega developed high compression pistons, longer con-rods, balancing, gas-flowed cylinder heads, oversized valves, high-lift camshaft, Keihin slide carburettors
  • Free-breathing air filter system
  • Engine develops 90bhp @ 6,700rpm (crankshaft – standard is 60bhp @ 6,500rpm)
  • Engine develops 104Nm torque @5,000rpm (standard is 74Nm @ 3,500rpm)

Transmission

  • Moorespeed heavy duty clutch (under development)
  • Total gearbox rebuild
  • Higher ratio 5th gear fitted (+10%)
  • Lower ratio 1st gear fitted (-6%)

Rear hub/wheel

  • Bevel box fitted with crown and pinion to suit 3-stud G/S80 hub with choice of ratios
  • Hub laced to 18-inch Excel rim with stainless steel spokes/nipples and offset 15mm to allow fitment of 140mm section rear tyre. 18-inch diameter wheel means greater tyre choice too
  • Rear brake operating lever has reversed action for extra ground clearance

Exhaust

  • Moorespeed stainless steel exhaust headers (oversize if required to suit engine tuning)
  • Moorespeed 2-into-1 stainless steel collector
  • Moorespeed re-packable stainless steel muffler

Fittings

  • Saddle slimmed, shortened, additional foam added to give flat top surface and recovered with leather/suede
  • Battery box replaced by stainless steel item carrying lighter, smaller, absorbed glass mat (non-spill) battery
  • Fuel tank sprayed/airbrushed to customer’s requirements
  • Pivot-peg pivoting stainless steel footrests
  • Renthal handlebars sitting on Moorespeed 75mm high risers
  • HPN front fairing and screen
  • Digital instruments with analogue style rev counter
  • 7-inch headlight with Phillips HiD lighting
  • UFO plastics
  • All fasteners (wherever practical) stainless steel
  • All framework/swing arm etc powder coated
  • Where practical BMW components utilised i.e. electrics, indicators, switchgear
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