Page 72 of 578

SPEC
 
2 - 1 
GENERAL SPECIFICATIONS 
EC200000 
SPECIFICATIONS 
EC211000 
GENERAL SPECIFICATIONS 
TT-R125E  
Model name: TT-R125ER (USA, CDN, AUS, NZ)
TT-R125E (EUROPE, ZA)
Model code number: 5HPK (USA, AUS, NZ, EUROPE, ZA)
5HPL (CDN)
Dimensions: USA, AUS, NZ, 
ZA, EUROPECDN
Overall length 1,830 mm (72.0 in) 1,865 mm (73.4 in)
Overall width 785 mm (30.9 in)  
←  
Overall height 1,055 mm (41.5 in)  
←  
Seat height 775 mm (30.5 in)  
←  
Wheelbase 1,250 mm (49.2 in)  
←  
Minimum ground clearance 265 mm (10.4 in)  
←  
Basic weight:
With oil and full fuel tank 90 kg (198.4 lb)
Engine:
Engine type Air cooled 4-stroke, SOHC
Cylinder arrangement Single cylinder, forward inclined
Displacement 124 cm 
3
 
 (7.57 cu.in)
Bore   
×  
 stroke 54.0   
×  
 54.0 mm (2.126   
×  
 2.126 in)
Compression ratio 10.0:1
Starting system Kick and electric starter
Lubrication system: Wet sump
Oil type or grade:
Engine oil (For USA and CDN)
At –10 ˚C (10 ˚F) or higher   
Å  
Yamalube 4 (10W-30) or SAE 10W-30 type
SE motor oil
At 5 ˚C (40 ˚F) or higher   
ı  
 
Yamalube 4 (20W-40) or SAE 20W-40 type
SE motor oil
(Except for USA and CDN)
API “SE” or higher grade 
     
        
        Page 75 of 578

SPEC
 
2 - 4 
GENERAL SPECIFICATIONS 
TT-R125LWE 
Model name: TT-R125LWER (USA, CDN, AUS, NZ)
TT-R125LWE (EUROPE, ZA)
Model code number: 5HPM (USA, AUS, NZ, EUROPE, ZA)
5HPN (CDN)
Dimensions: USA, AUS, NZ, 
ZA, EUROPECDN
Overall length 1,885 mm (74.2 in) 1,890 mm (74.4 in)
Overall width 795 mm (31.3 in) 
←  
Overall height 1,085 mm (42.7 in) 
←  
Seat height 805 mm (31.7 in) 
←  
Wheelbase 1,270 mm (50.0 in) 
←  
Minimum ground clearance 295 mm (11.6 in) 
←  
Basic weight:
With oil and full fuel tank 90 kg (198.4 lb)
Engine:
Engine type Air cooled 4-stroke, SOHC
Cylinder arrangement Single cylinder, forward inclined
Displacement 124 cm 
3
 
 (7.57 cu.in)
Bore  
× 
 stroke 54.0  
×  
 54.0 mm (2.126   
×  
 2.126 in)
Compression ratio 10.0:1
Starting system Kick and electric starter
Lubrication system: Wet sump
Oil type or grade:
Engine oil (For USA and CDN)
At –10 ˚C (10 ˚F) or higher   
Å  
Yamalube 4 (10W-30) or SAE 10W-30 type
SE motor oil
At 5 ˚C (40 ˚F) or higher   
ı  
 
Yamalube 4 (20W-40) or SAE 20W-40 type
SE motor oil
(Except for USA and CDN)
API “SE” or higher grade 
     
        
        Page 78 of 578
SPEC
 
2 - 7 
MAINTENANCE SPECIFICATIONS 
EC212000 
MAINTENANCE SPECIFICATIONS 
EC212100 
ENGINE 
Item Standard Limit
Cylinder head:
Warp limit ---- 0.03 mm 
(0.0012 in)
Cylinder:
Bore size 54.000 ~ 54.019 mm
(2.1260 ~ 2.1267 in)----
Out of round limit ---- 0.05 mm 
(0.0020 in)
Camshaft:
Drive method Chain drive (left) ----
Cam dimensions
Intake“A”25.881 ~ 25.981 mm
(1.0189 ~ 1.0229 in)25.851 mm 
(1.0178 in)
“B”21.195 ~ 21.295 mm
(0.8344 ~ 0.8384 in)21.165 mm 
(0.8333 in)
Exhaust“A”25.841 ~ 25.941 mm
(1.0174 ~ 1.0213 in)25.811 mm 
(1.0162 in)
“B”21.050 ~ 21.150 mm
(0.8287 ~ 0.8327 in)21.020 mm 
(0.8276 in)
Camshaft runout limit ---- 0.03 mm 
(0.0012 in) 
     
        
        Page 79 of 578

SPEC
 
2 - 8 
MAINTENANCE SPECIFICATIONS 
Cam chain:
Cam chain type/No. of links DID25SD DHA/88 ----
Cam chain adjustment method Automatic ----
Rocker arm/rocker arm shaft:
Shaft outside diameter 9.981 ~ 9.991 mm
(0.3930 ~ 0.3933 in)9.95 mm 
(0.3917 in)
Rocker arm inside diameter 10.000 ~ 10.015 mm
(0.3937 ~ 0.3943 in)10.03 mm 
(0.3949 in)
Valve, valve seat, valve guide:
Valve clearance (cold) IN 0.08 ~ 0.12 mm
(0.0031 ~ 0.0047 in)----
EX 0.10 ~ 0.14 mm
(0.0039 ~ 0.0055 in)----
Valve dimensions:
“A” head diameter IN 25.9 ~ 26.1 mm
(1.0197 ~ 1.0276 in)----
EX 21.9 ~ 22.1 mm
(0.8622 ~ 0.8701 in)----
“B” face width IN 1.1 ~ 3.0 mm
(0.0433 ~ 0.1181 in)----
EX 1.7 ~ 2.8 mm
(0.0669 ~ 0.1102 in)----
“C” seat width IN0.9 ~ 1.1 mm
(0.0354 ~ 0.0433 in)1.6 mm 
(0.0630 in)
EX 0.9 ~ 1.1 mm
(0.0354 ~ 0.0433 in)1.6 mm 
(0.0630 in)
“D” margin thickness IN 0.4 ~ 0.8 mm
(0.0157 ~ 0.0315 in)----
EX 0.8 ~ 1.2 mm
(0.0315 ~ 0.0472 in)----
Stem outside diameter IN4.975 ~ 4.990 mm
(0.1959 ~ 0.1965 in)4.950 mm 
(0.1949 in)
EX 4.960 ~ 4.975 mm
(0.1953 ~ 0.1959 in)4.935 mm 
(0.1943 in)
Guide inside diameter IN 5.000 ~ 5.012 mm
(0.1969 ~ 0.1973 in)5.042 mm 
(0.1985 in)
EX 5.000 ~ 5.012 mm
(0.1969 ~ 0.1973 in)5.042 mm 
(0.1985 in)
Stem-to-guide clearance IN0.010 ~ 0.037 mm
(0.0004 ~ 0.0015 in)0.08 mm 
(0.0031 in)
EX 0.025 ~ 0.052 mm
(0.0010 ~ 0.0020 in)0.10 mm 
(0.0040 in) Item Standard Limit
Head diameter
B
Face widthC
Seat width
D
Margin thicknessA 
     
        
        Page 81 of 578

SPEC
 
2 - 10 
MAINTENANCE SPECIFICATIONS 
Piston:
Piston to cylinder clearance 0.020 ~ 0.026 mm
(0.0008 ~ 0.0010 in)0.15 mm 
(0.0059 in)
Piston size “D”53.977 ~ 53.996 mm
(2.1251 ~ 2.1258 in)----
Piston over size (2nd) 54.5 mm (2.1457 in) ----
(4th) 55.0 mm (2.1654 in) ----
Measuring point “H”5 mm (0.20 in) ----
Piston off-set 0.5 mm (0.0197 in) ----
Piston pin bore inside diameter 15.002 ~ 15.013 mm
(0.5906 ~ 0.5911 in)15.043 mm 
(0.5922 in)
Piston pin outside diameter 14.991 ~ 15.000 mm
(0.5902 ~ 0.5906 in)14.971 mm 
(0.5894 in)
Piston rings:
Top ring
Type Barrel ----
Dimensions (B  
× 
 T) 1.0  
×  
 2.1 mm (0.04   
×  
 0.08 in) ----
End gap (installed) 0.15 ~ 0.30 mm
(0.006 ~ 0.012 in)0.4 mm 
(0.016 in)
Side clearance (installed) 0.035 ~ 0.090 mm
(0.0014 ~ 0.0035 in)0.12 mm 
(0.0047 in)
2nd ring
Type Taper ----
Dimensions (B  
× 
 T) 1.0  
× 
 2.1 mm (0.04  
×  
 0.08 in) ----
End gap (installed) 0.30 ~ 0.45 mm
(0.012 ~ 0.018 in)0.55 mm 
(0.022 in)
Side clearance 0.020 ~ 0.060 mm
(0.0008 ~ 0.0024 in)0.12 mm 
(0.0047 in)
Oil ring
Dimensions (B  
× 
 T) 2.0  
× 
 2.2 mm (0.08  
×  
 0.09 in) ----
End gap (installed) 0.20 ~ 0.70 mm (0.01 ~ 0.03 in) ----Item Standard Limit
H
D
T
B
B
T
B
T 
     
        
        Page 97 of 578

SPEC
 
2 - 1 
CARACTÉRISTIQUES 
CARACTÉRISTIQUES GÉNÉRALES 
TT-R125E  
Nom du modèle: TT-R125ER (USA, CDN, AUS, NZ)
TT-R125E (EUROPE, ZA)
Numéro de code de modèle: 5HPK (USA, AUS, NZ, EUROPE, ZA)
5HPL (CDN)
Dimensions: USA, AUS, NZ, 
ZA, EUROPECDN
Longueur hors tout 1.830 mm (72,0 in)
1.865 mm (73,4 in)
Largeur hors tout 785 mm (30,9 in)  
←   
Hauteur hors tout 1.055 mm (41,5 in)  
←   
Hauteur de la selle 775 mm (30,5 in)  
←   
Empattement 1.250 mm (49,2 in)  
←   
Garde au sol minimale 265 mm (10,4 in)  
←   
Poids net:
Avec huile et réservoir de carburant rempli 90 kg (198,4 lb)
Moteur:
Type de moteur 4 temps, refroidissement par air, un arbre à cames en 
tête (SOHC)
Disposition du cylindre Monocylindre, incliné vers l’avant
Cylindrée 124 cm 
3
 
 (7,57 cu.in)
Alésage   
×  
 course 54,0   
×  
 54,0 mm (2,126   
×  
 2,126 in)
Taux de compression 10,0:1
Système de démarrage Kick et démarreur électrique
Système de graissage: Carter humide
Type ou grade d’huile:
Huile de moteur (USA et CDN)
À –10 ˚C (10 ˚F) ou plus   
Å   
Yamalube 4 (10W-30) ou huile moteur SAE 10W-30 
de grade SE
À 5 ˚C (40 ˚F) ou plus   
ı  
Yamalube 4 (20W-40) ou huile moteur SAE 20W-40 
de grade SE
(Sauf USA et CDN)
API “SE” ou grade supérieur 
CARACTÉRISTIQUES GÉNÉRALES 
     
        
        Page 100 of 578

SPEC
 
2 - 4 
TT-R125LWE 
Nom du modèle: TT-R125LWER (USA, CDN, AUS, NZ)
TT-R125LWE (EUROPE, ZA)
Numéro de code de modèle: 5HPM (USA, AUS, NZ, EUROPE, ZA)
5HPN (CDN)
Dimensions: USA, AUS, NZ, 
ZA, EUROPECDN
Longueur hors tout 1.885 mm (74,2 in) 1.890 mm (74,4 in)
Largeur hors tout 795 mm (31,3 in) 
←   
Hauteur hors tout 1.085 mm (42,7 in) 
←   
Hauteur de la selle 805 mm (31,7 in) 
←   
Empattement 1.270 mm (50,0 in) 
←   
Garde au sol minimale 295 mm (11,6 in) 
←   
Poids net:
Avec huile et réservoir de carburant rempli 90 kg (198,4 lb)
Moteur:
Type de moteur 4 temps, refroidissement par air, un arbre à cames en 
tête (SOHC)
Disposition du cylindre Monocylindre, incliné vers l’avant
Cylindrée 124 cm 
3
 
 (7,57 cu.in)
Alésage  
× 
 course 54,0  
×  
 54,0 mm (2,126   
×  
 2,126 in)
Taux de compression 10,0:1
Système de démarrage Kick et démarreur électrique
Système de graissage: Carter humide
Type ou grade d’huile:
Huile de moteur (USA et CDN)
À –10 ˚C (10 ˚F) ou plus   
Å   
Yamalube 4 (10W-30) ou huile moteur SAE 10W-30 
de grade SE
À 5 ˚C (40 ˚F) ou plus   
ı  
Yamalube 4 (20W-40) ou huile moteur SAE 20W-40 
de grade SE
(Sauf USA et CDN)
API “SE” ou grade supérieur 
CARACTÉRISTIQUES GÉNÉRALES 
     
        
        Page 103 of 578
SPEC
 
2 - 7 
CARACTÉRISTIQUES D’ENTRETIEN 
MOTEUR 
Désignation Standard Limite
Culasse:
Limite de déformation ---- 0,03 mm 
(0,0012 in)
Cylindre:
Alésage 54,000 à 54,019 mm
(2,1260 à 2,1267 in)----
Limite d’ovalisation ---- 0,05 mm 
(0,0020 in)
Arbre à cames:
Méthode d’entraînement Transmission par chaîne (côté gau-
che)----
Dimensions de came
Admission“A” 25,881 à 25,981 mm
(1,0189 à 1,0229 in)25,851 mm 
(1,0178 in)
“B” 21,195 à 21,295 mm
(0,8344 à 0,8384 in)21,165 mm 
(0,8333 in)
Échappement“A” 25,841 à 25,941 mm
(1,0174 à 1,0213 in)25,811 mm 
(1,0162 in)
“B” 21,050 à 21,150 mm
(0,8287 à 0,8327 in)21,020 mm 
(0,8276 in)
Limite de voile d’arbre à cames ---- 0,03 mm 
(0,0012 in) 
CARACTÉRISTIQUES D’ENTRETIEN