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
CASE R29245, TELCO-TATA 9TD01089/3, VOLVO 14044063, SENNEBOGEN 2511018586, POCLAIN-CASE POCLAIN S0233006, JOHN DEERE T51523, Surub papuc, DRESSER 624848C1, POCLAIN-CASE POCLAIN ZKI233006, LANDINI MASSEY FERGUSON 2895889M1, POCLAIN-CASE POCLAIN P0233006S, VPI V1S1859, TELCO-TATA TD01120/03, INGERSOLL RAND 57070971, LIEBHERR 4097514, SENNEBOGEN 018586, PRIESTMAN 234855, VOLVO 44063, ITM D01070A0N15, HYUNDAI 81E-0023, VARIOUS 571108, LIEBHERR 4098.108.16, HANOMAG 3254010M1, HANOMAG 2962609M1, BAUER 240074, HANOMAG 2962609M, REEDRILL V007409, LIEBHERR 4091000, DRESSER-FURUKAWA 3194590R2, CNH-FIAT NEW HOLLAND 76040849, BERCO ID427, DRESSER-FURUKAWA 1254518H1, HANOMAG 374937128, CATERPILLAR, CATERPILLAR 2M8758, TELCO-TATA TD01089/3, CATERPILLAR 3Y1129, BERCO CR1105A, D6C, BENATI 2004014, LIEBHERR 7001689, 46J-869-UP, TELCO-TATA 9TD01120/03, Buldozer, O-&-K-TEREX 111742, LIEBHERR 786500614, KOMATSU 207-32-E1134E, LIEBHERR 7003775, CATERPILLAR 1S1859, BERCO CR1105
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
Buldozer, LIEBHERR 4098.108.16, CATERPILLAR 2M8758, CASE R29245, DRESSER-FURUKAWA 1254518H1, HYUNDAI 81E-0023, REEDRILL V007409, BERCO CR1105, TELCO-TATA TD01120/03, INGERSOLL RAND 57070971, LIEBHERR 4097514, CATERPILLAR 3Y1129, HANOMAG 2962609M, SENNEBOGEN 2511018586, DRESSER 624848C1, VOLVO 14044063, ITM D01070A0N15, HANOMAG 2962609M1, LANDINI MASSEY FERGUSON 2895889M1, TELCO-TATA TD01089/3, HANOMAG 374937128, SENNEBOGEN 018586, 46J-869-UP, LIEBHERR 4091000, Surub papuc, JOHN DEERE T51523, KOMATSU 207-32-E1134E, LIEBHERR 786500614, CNH-FIAT NEW HOLLAND 76040849, POCLAIN-CASE POCLAIN ZKI233006, TELCO-TATA 9TD01089/3, TELCO-TATA 9TD01120/03, VOLVO 44063, LIEBHERR 7001689, O-&-K-TEREX 111742, BERCO CR1105A, CATERPILLAR, DRESSER-FURUKAWA 3194590R2, POCLAIN-CASE POCLAIN S0233006, BENATI 2004014, HANOMAG 3254010M1, LIEBHERR 7003775, VPI V1S1859, POCLAIN-CASE POCLAIN P0233006S, D6C, VARIOUS 571108, CATERPILLAR 1S1859, BERCO ID427, BAUER 240074, PRIESTMAN 234855