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
1Y-460-UP, KOMATSU 01803-E0202E, TELCO-TATA TD01089/4, VOLVO 140440645, HANOMAG 3254012M1, CNH-FIAT NEW HOLLAND 76040850, BERCO CR1967, HYUNDAI 81E7-0022, LIEBHERR 7001688, INGERSOLL RAND 56969264, POCLAIN-CASE POCLAIN V0234504, BLOUNT 31001809, LIEBHERR 7003772, CATERPILLAR 1S1860, TELCO-TATA TD01120/04, VARIOUS 571109, DRESSER 616226C1, LARSEN & TOUBRO W20134542, BAUER 49335, Piulita, CNH-FIAT NEW HOLLAND 87582723, ITM D0108000N17, CATERPILLAR 1A4019, Buldozer, HANOMAG 2895890M1, CASE R29246, POCLAIN-CASE POCLAIN ZKI234504, O-&-K-TEREX 42452, DRESSER-FURUKAWA 3194591R1, VPI V1S1860, POCLAIN-CASE POCLAIN E0050018, SENNEBOGEN 2528018585, REEDRILL V007410, D6D, VOLVO 44064, TESMEC T00-2600-126, LIEBHERR 4130.246.16, TELCO-TATA 9TD01089/4, LIEBHERR 4111000, POCLAIN-CASE POCLAIN V2334504, SENNEBOGEN 018585, VOLVO 14044064, CATERPILLAR
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
TESMEC T00-2600-126, LIEBHERR 7001688, CNH-FIAT NEW HOLLAND 87582723, LIEBHERR 4111000, POCLAIN-CASE POCLAIN V0234504, VARIOUS 571109, Buldozer, TELCO-TATA TD01120/04, BLOUNT 31001809, CATERPILLAR, VOLVO 44064, LARSEN & TOUBRO W20134542, HYUNDAI 81E7-0022, LIEBHERR 7003772, HANOMAG 2895890M1, INGERSOLL RAND 56969264, Piulita, POCLAIN-CASE POCLAIN V2334504, BERCO CR1967, REEDRILL V007410, CASE R29246, SENNEBOGEN 2528018585, VOLVO 14044064, KOMATSU 01803-E0202E, POCLAIN-CASE POCLAIN ZKI234504, DRESSER-FURUKAWA 3194591R1, VOLVO 140440645, HANOMAG 3254012M1, TELCO-TATA TD01089/4, CATERPILLAR 1S1860, SENNEBOGEN 018585, BAUER 49335, 1Y-460-UP, TELCO-TATA 9TD01089/4, O-&-K-TEREX 42452, ITM D0108000N17, POCLAIN-CASE POCLAIN E0050018, D6D, VPI V1S1860, LIEBHERR 4130.246.16, DRESSER 616226C1, CNH-FIAT NEW HOLLAND 76040850, CATERPILLAR 1A4019