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
VOLVO 44062, VERMEER 1181230011, DRESSER-FURUKAWA 1254381H1, VOLVO 14044062, TELCO-TATA 9TD01119/04, DAEWOO K1043367, CNH-FIAT NEW HOLLAND 79009851, DAEWOO 9121-7004, REEDRILL V005767, LANDINI MASSEY FERGUSON 2928706M1, C.M.W-(CHARLES-MACHINES) 107-364, LANDINI MASSEY FERGUSON 1430747M1, GAMBETTI-BARRE M175903002, VOLVO SA9112-12001, DAEWOO 9121-6005, SENNEBOGEN 3528013331, POCLAIN-CASE POCLAIN PK134536, VPI V1M1408, LIEBHERR 4253411, CATERPILLAR, DRESSER 260714R1, MAIT 2175047, CNH-FIAT NEW HOLLAND 579383, SIMIT 45482379, Buldozer, LIEBHERR 4174947, MAIT 2904108, CNH-FIAT NEW HOLLAND 4982173, HYUNDAI 81EL-25030, CNH-FIAT NEW HOLLAND 79004490, INGERSOLL RAND 56965270, LIEBHERR 4122664, LANDINI MASSEY FERGUSON 2961659M1, EURODAEWOO 9121-6005D11, DRESSER-FURUKAWA 3150627R1, LIEBHERR 7402313, CNH-FIAT NEW HOLLAND 71401387, DRESSER 311347R2, VOLVO 14526392, E.W.K. 501518401, HYUNDAI 81E6-37030, DRESSER 616209C1, VOLVO 020005225990, KOMATSU 00131437, HANOMAG 2979125M, BERCO CR1250, MECALAC 5230071, Piulita, VARIOUS 571009, POCLAIN-CASE POCLAIN V2434592, SAMSUNG-H.I. 9112-01201, JOHN DEERE CQ09338, CATERPILLAR 5W9828, DAEWOO 2121-6014, BERCO CR1250B, LIEBHERR 7001439, POCLAIN-CASE POCLAIN ZKI134536, JCB JNA0358, ITM D01060C0N17, A.B.G. 21076294, KOMATSU 131437, WIRTGEN 43499, JOHN DEERE T43322, VOLVO 044062, EXTEC VCR1250, CASE R25688, JOHN DEERE T45097, LANDINI MASSEY FERGUSON N1926, LIEBHERR 7001334, POCLAIN-CASE POCLAIN K0134536, JCB JNA0086, LIEBHERR 4982173, POCLAIN-CASE POCLAIN P2434592V, TELCO-TATA 9TD01583/3, CATERPILLAR 1M1408, LANDINI MASSEY FERGUSON 392826X1, INGERSOLL RAND 57700858, ATLAS-TEREX 0362007, BENATI 2001075, TELCO-TATA TD01583/3, LARSEN & TOUBRO V20134541, LIEBHERR 4129303, LIEBHERR 4111100, D4H, 2AC-552-5596, JOHN DEERE-CAMECO CB01419006, BENATI 2001015, TELCO-TATA TD01119/04, VOLVO 9112-12001, LANDINI MASSEY FERGUSON 2979125M1, JCB 200/61801
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 4253411, LIEBHERR 4982173, DAEWOO 9121-7004, INGERSOLL RAND 56965270, LIEBHERR 4174947, TELCO-TATA 9TD01583/3, JCB 200/61801, REEDRILL V005767, VOLVO 14526392, POCLAIN-CASE POCLAIN ZKI134536, CNH-FIAT NEW HOLLAND 79009851, KOMATSU 00131437, VOLVO 9112-12001, POCLAIN-CASE POCLAIN P2434592V, BENATI 2001075, CNH-FIAT NEW HOLLAND 579383, SIMIT 45482379, A.B.G. 21076294, VPI V1M1408, HYUNDAI 81EL-25030, SAMSUNG-H.I. 9112-01201, VOLVO 020005225990, LIEBHERR 4129303, C.M.W-(CHARLES-MACHINES) 107-364, VOLVO 044062, JOHN DEERE-CAMECO CB01419006, EXTEC VCR1250, BENATI 2001015, LANDINI MASSEY FERGUSON 1430747M1, CNH-FIAT NEW HOLLAND 79004490, LARSEN & TOUBRO V20134541, JOHN DEERE T43322, CASE R25688, ATLAS-TEREX 0362007, MAIT 2904108, D4H, DAEWOO 2121-6014, LANDINI MASSEY FERGUSON 2961659M1, TELCO-TATA 9TD01119/04, GAMBETTI-BARRE M175903002, DRESSER-FURUKAWA 3150627R1, LIEBHERR 4122664, DRESSER 616209C1, LIEBHERR 7402313, MAIT 2175047, VOLVO 44062, JCB JNA0358, Piulita, JOHN DEERE CQ09338, INGERSOLL RAND 57700858, VERMEER 1181230011, LIEBHERR 4111100, HANOMAG 2979125M, CATERPILLAR, VOLVO 14044062, LIEBHERR 7001334, BERCO CR1250B, WIRTGEN 43499, LANDINI MASSEY FERGUSON 2928706M1, POCLAIN-CASE POCLAIN PK134536, SENNEBOGEN 3528013331, 2AC-552-5596, DRESSER-FURUKAWA 1254381H1, DAEWOO K1043367, JOHN DEERE T45097, ITM D01060C0N17, CNH-FIAT NEW HOLLAND 4982173, LANDINI MASSEY FERGUSON N1926, EURODAEWOO 9121-6005D11, BERCO CR1250, CNH-FIAT NEW HOLLAND 71401387, LIEBHERR 7001439, HYUNDAI 81E6-37030, DRESSER 260714R1, TELCO-TATA TD01119/04, DRESSER 311347R2, Buldozer, CATERPILLAR 5W9828, MECALAC 5230071, POCLAIN-CASE POCLAIN K0134536, CATERPILLAR 1M1408, E.W.K. 501518401, VOLVO SA9112-12001, TELCO-TATA TD01583/3, POCLAIN-CASE POCLAIN V2434592, LANDINI MASSEY FERGUSON 2979125M1, VARIOUS 571009, LANDINI MASSEY FERGUSON 392826X1, JCB JNA0086, KOMATSU 131437, DAEWOO 9121-6005