In timp ce modelele standard ale Seriei 3 beneficiază de o transmisie hidrostatică cu două viteze, care permite utilajelor să se deplaseze cu viteze cuprinse între 0-20 km/h, noul 121E HTS, împreună cu alte două modele mai mari, utilizează o unitate hidrostatică cu două trepte în combinaţie
POCLAIN-CASE POCLAIN V2434592, INGERSOLL RAND 57700858, TELCO-TATA 9TD01583/3, BERCO CR1250B, LANDINI MASSEY FERGUSON 2961659M1, C.M.W-(CHARLES-MACHINES) 107-364, CATERPILLAR 1M1408, WIRTGEN 43499, VOLVO 44062, VOLVO 14526392, TELCO-TATA TD01119/04, EXTEC VCR1250, DRESSER 311347R2, VARIOUS 571009, VOLVO 9112-12001, BENATI 2001015, VERMEER 1181230011, POCLAIN-CASE POCLAIN PK134536, POCLAIN-CASE POCLAIN K0134536, LR621, VOLVO 14044062, CNH-FIAT NEW HOLLAND 579383, ITM D01060C0N17, E.W.K. 501518401, CASE R25688, LIEBHERR 4174947, LIEBHERR 4253411, MAIT 2904108, LANDINI MASSEY FERGUSON 2928706M1, DAEWOO 9121-6005, JOHN DEERE-CAMECO CB01419006, CNH-FIAT NEW HOLLAND 79004490, VOLVO 044062, HANOMAG 2979125M, SIMIT 45482379, DAEWOO K1043367, GAMBETTI-BARRE M175903002, BENATI 2001075, DRESSER 260714R1, SENNEBOGEN 3528013331, DAEWOO 2121-6014, JCB 200/61801, ATLAS-TEREX 0362007, INGERSOLL RAND 56965270, DRESSER-FURUKAWA 3150627R1, HYUNDAI 81EL-25030, KOMATSU 131437, JOHN DEERE T45097, TELCO-TATA TD01583/3, LIEBHERR 4129303, DRESSER-FURUKAWA 1254381H1, LIEBHERR 7001334, MECALAC 5230071, JOHN DEERE CQ09338, JOHN DEERE T43322, KOMATSU 00131437, VPI V1M1408, VOLVO 020005225990, LIEBHERR 4982173, A.B.G. 21076294, LIEBHERR 7001439, SAMSUNG-H.I. 9112-01201, CATERPILLAR 5W9828, POCLAIN-CASE POCLAIN P2434592V, BERCO CR1250, CNH-FIAT NEW HOLLAND 4982173, Piulita, POCLAIN-CASE POCLAIN ZKI134536, Incarcator, LANDINI MASSEY FERGUSON 2979125M1, LIEBHERR 4111100, LANDINI MASSEY FERGUSON 392826X1, LIEBHERR, EURODAEWOO 9121-6005D11, LIEBHERR 7402313, LIEBHERR 4122664, JCB JNA0086, CNH-FIAT NEW HOLLAND 71401387, HYUNDAI 81E6-37030, LANDINI MASSEY FERGUSON N1926, LANDINI MASSEY FERGUSON 1430747M1, MAIT 2175047, TELCO-TATA 9TD01119/04, VOLVO SA9112-12001, JCB JNA0358, CNH-FIAT NEW HOLLAND 79009851, REEDRILL V005767, DRESSER 616209C1, LARSEN & TOUBRO V20134541, DAEWOO 9121-7004
Utilajul de constructii a fost testat pe santiere aflate la o altitudine mare si in lucrari realizate la temperaturi scazute. Astfel, cumparatorii buldozerului Komatsu D65-17 sunt convinsi ca utilajul va respecta norma Tier 4 in orice imprejurare. Puterea motorului acestui buldozer Komatsu variaza intre 208 si 222
LIEBHERR 4129303, CNH-FIAT NEW HOLLAND 71401387, POCLAIN-CASE POCLAIN P2434592V, VOLVO 020005225990, VARIOUS 571009, CASE R25688, JOHN DEERE CQ09338, TELCO-TATA 9TD01583/3, LANDINI MASSEY FERGUSON 2961659M1, LIEBHERR 4111100, TELCO-TATA TD01583/3, VERMEER 1181230011, LIEBHERR 4982173, DAEWOO K1043367, CNH-FIAT NEW HOLLAND 579383, MAIT 2175047, INGERSOLL RAND 57700858, JOHN DEERE-CAMECO CB01419006, VOLVO 44062, TELCO-TATA 9TD01119/04, TELCO-TATA TD01119/04, DRESSER 311347R2, JCB JNA0086, LIEBHERR 7402313, VOLVO 14044062, POCLAIN-CASE POCLAIN V2434592, DRESSER-FURUKAWA 1254381H1, LANDINI MASSEY FERGUSON 1430747M1, Incarcator, DRESSER 616209C1, LIEBHERR 4253411, JOHN DEERE T45097, POCLAIN-CASE POCLAIN K0134536, MAIT 2904108, JOHN DEERE T43322, LIEBHERR, HYUNDAI 81E6-37030, LANDINI MASSEY FERGUSON 392826X1, ITM D01060C0N17, WIRTGEN 43499, BENATI 2001075, JCB JNA0358, HYUNDAI 81EL-25030, BERCO CR1250, REEDRILL V005767, CNH-FIAT NEW HOLLAND 79009851, DRESSER 260714R1, VOLVO 9112-12001, CATERPILLAR 1M1408, VPI V1M1408, LIEBHERR 7001334, DAEWOO 9121-7004, HANOMAG 2979125M, VOLVO SA9112-12001, BENATI 2001015, MECALAC 5230071, DAEWOO 2121-6014, BERCO CR1250B, DAEWOO 9121-6005, LIEBHERR 4122664, LANDINI MASSEY FERGUSON 2928706M1, A.B.G. 21076294, ATLAS-TEREX 0362007, Piulita, CNH-FIAT NEW HOLLAND 79004490, LIEBHERR 4174947, C.M.W-(CHARLES-MACHINES) 107-364, LANDINI MASSEY FERGUSON N1926, CATERPILLAR 5W9828, SAMSUNG-H.I. 9112-01201, E.W.K. 501518401, SIMIT 45482379, LANDINI MASSEY FERGUSON 2979125M1, GAMBETTI-BARRE M175903002, LARSEN & TOUBRO V20134541, EURODAEWOO 9121-6005D11, CNH-FIAT NEW HOLLAND 4982173, SENNEBOGEN 3528013331, LIEBHERR 7001439, POCLAIN-CASE POCLAIN ZKI134536, VOLVO 044062, EXTEC VCR1250, LR621, KOMATSU 00131437, KOMATSU 131437, VOLVO 14526392, POCLAIN-CASE POCLAIN PK134536, JCB 200/61801, INGERSOLL RAND 56965270, DRESSER-FURUKAWA 3150627R1