MARTIN 40BTB18

Marsoni

M251S

$188.50

Get it in 3 business days with 1 day shipping. Friday, May 29

MARTIN 40BTB1840BTB18 ROLLER CHAIN SPROCKET STANDARD STOCK NO. 40 CHAIN 1 2 INCH PITCH TYPE B 1210 BUSHING BUSHED TB BORE 18 TEETH 3. 135 INCH OUTER DIAMETER 2 15 32 INCH HUB DIAMETER SINGLE STRAND TAPER BUSH HUB RECESSED FOR CHAIN STEEL RIM ONLY

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Set screws are poor quality and are sometimes powdercoated on the exposed threads. Leads to striped hex sockets and inability to tighten properly. Durable finish as evidenced by no visible damage after throwing parts across the shop in frustration. Ended up running self tapping screws thru parts to complete assembly.

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Reviewed in the United States on February 26, 2024

Verified Purchase

Carl L. Bradley

Port Orchard, US

★★★★★ 1

Kinda flimsy…

Thought the assembly was metal, it’s some kind of PVC.

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Reviewed in the United States on September 22, 2025

Verified Purchase

Michelle bullard