The GTR 500 is a complete new speedway engine
and is the result of cooperation between Gerhard and Suter Racing.
The GTR defines itself with:
  • a twin-cam finger-follower head design
  • a fully integrated lubrication system with an oil pump enabling
    the engine to run for longer periods of time between servicing,
    thus reducing running costs significantly
  • a Selettra digital system fitted as standard
  • only top quality components are being used throughout.
TECHNICAL DATA - GTR 500
PRODUCT NAME GTR 500
DISPLACEMENT 500 cc
BORE X STROKE 90.0 x 78.3mm
TIMING SYSTEM DOHC
VALVES PER CYLINDER 4
COMPRESSION RATIO 16.9
OUTPUT 62 hp
MAX. TORQUE 56Nm /7'900 rpm
MAX. ENGINE SPEED 14'000 rpm
ENGINE WEIGHT (DRY) 27.5 kg

The GTR 250 is the small brother of the GTR 500 and based on the same construction
concept. The main goal for the 250cc engine was to keep most of the parts similar to
the 500cc engine, to obtain longer service intervals due to high quality production
parts and to realize an engine tat makes the speedway sport affordable to the
young generation

The GTR 250 is under construction and will be available soon.

TECHNICAL DATA - GTR 250
PRODUCT NAME GTR 250
DISPLACEMENT 250 cc
BORE X STROKE 78.0 x 52.5mm
TIMING SYSTEM DOHC
VALVES PER CYLINDER 4
COMPRESSION RATIO TBD
OUTPUT TBD
MAX. TORQUE TBD
MAX. ENGINE SPEED TBD
ENGINE WEIGHT (DRY) TBD