Honda CRF110F 2019 Owner's Manual page 119

ENGINE
Bore and stroke
Compression ratio
Displacement
Spark plug
Standard
Spark plug gap
Idle speed
Valve clearance (Cold)
CHASSIS AND SUSPENSION
Caster
Trail
Tyre size, front
Tyre size, rear
Tyre type
Wheel size, front
Wheel size, rear
108
50.0 × 55.6 mm (1.97 × 2.19 in)
9.0 : 1
109 cm (6.7 cu-in)
3
CPR6EA-9S (NGK)
0.8 – 0.9 mm (0.03 – 0.04 in)
1,400 ±100 min (rpm)
-1
Intake 0.10 mm (0.004 in)
Exhaust 0.15 mm (0.006 in)
24°25'
52 mm (2.0 in)
70/100-14M/C 37J
80/100-12 50J
bias-ply, tube
14 × 1.4
12 × 1.6