HD⚡SWITCH: Engineered Performance Solid Steel & Seamless: Machine from a single billet of steel for maximum strength and seamless design, reducing belt wear BIGBearing & Rebuildable: Features an oversized BIGBearing for greater durability and performance in demanding conditions—no need for full replacements. Snap-Ring design allows for easy bearing replacement Fits Lazer Z Pioneer Quest Radius Staris E-Series X-Series S-Series GrandStand HDX Multi Force Groundsmaster 3200 3300 Series TITAN HD 2000 Z Master G3 2000 3000 5000 6000 Series HD BIGBearing Billet Idler Pulleys are machined from a single piece of solid steel and use a Larger Replaceable Pulley Bearing. Seamless Billet Pulleys provide superior durability, precision, and increased belt life. We use a larger bearing to increase life; and our billet pulley design makes it possible to replace the bearing if it fails. Designed specifically for heavy-duty applications, these pulleys offer the absolute best replacement option. - Fits Lazer Z LZDS902K72RD 0-314999999, LZS740EKC60RD LZS740EKC60RS LZS749EKC72RD LZS749EKC72RS 314000000-314999999, LZE730GKA60RA1 LZE749EKC72RA1 (ALL), LZS902DKU60R00 LZS902DKU72R00 0-402082299, LZE801GKA60RA1 LZE801GKA72RA1 316000000-up, LZX940EKC60RT0 LZX940EKC72RT0 0-402082299, LZS902DKU605A1 LZS902DKU725A1 0-402082299, LZE751GKA72RA1 0-406294344, LZX940EKC60RW0 LZX940EKC72RW0 402082300-406294344, LZS801CKA60RA1 LZS801CKA72RA1 406294345-416150474, LZS801GKA60RA1 LZS801GKA72RA1 416150475-UP - Fits Pioneer PNS680KC523 312000000-313999999, PNE651KA482 PNE691KA522 PNS651KA483 PNS740KC604 PNS740KC604SS 312000000-314999999, PNS691KA523 PNS710KC483 PNS720KC523 PNS720KC523SS PNS730KA604 314000000-314999999, PNE710GKC48200 PNE720GKC52200 PNS710GKC483A4 PNS720GKC523A4 315000000-315999999, PNE651GKA48200 PNE691GKA52200 PNS710GKC48300 PNS720GKC52300 PNS730GKA604A3 PNS740GKC60400 PNS740GKC604A4 PNS740GKC60RA3 315000000-399999999, PNE22KA482 PNE24KA522 PNS22KA483 PNS24KA523 920000-999999 - Fits Quest QSP20BV443 QSP20BV483 QSP20KAS443 QSP20KAS483 QSP20KAX443 QSP22KAS523 850000-919999, Staris STS730AKC52400 STS730GKA52400 404314159-411294211 - Fits Radius RAS710CKC48300 RAS720CKC52300 RAS720GKC52300 RAS740CKC60300 RAS740GKC60300 RAS740GKC60R00 0-402082299, RAX651GKA484A3 RAX691GKA524A3 RAX730GKA604A3 0-411294211, RAE708GEM48300 RAE708GEM52300 RAE708GEM60300 0-413950473, RAS708GEM483C3 RAS708GEM523C3 RAS708GEM603C3 RAS708GEM60RC3 402082300-408644345 - Fits RAE720CKC48300 402082300-413950473, RAE740CKC60300 406294345-411294211, RAS651GKA483A3 RAS691GKA523A3 RAS730GKA603A3 RAS730GKA60RA3 408644346-413950473, RAX921GKA604A3 411294212-413950473, RZE708GEM52300 RZE708GEM60300 RZS691GKA523A3 RZS730GKA603A3 RZX801GKA524A3 RZX921GKA604A3 413950474-UP - Fits GrandStand 72509 72512 72513 72520 (ALL), GrandStand 74513 (SN316000001-403224658), GrandStand HDX 72510 72514 72517 (ALL), GrandStand HDX 72506 (0-414499999), GrandStand Multi Force 72523 (ALL), Groundsmaster 3200 3300 Series 31971 31972 (ALL), Groundsmaster 3200/3300 31973 31974 31975 (ALL), TITAN HD 2000 74463 (ALL)