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Steve, Motorcycle Mechanic
Category: Motorcycle
Satisfied Customers: 6816
Experience:  30+ yrs. experience, MMI, HD technician, HD early, engine rebuild/performance, bike builder, kit bike program manager, CCI 2001-2004
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Can l put a 61T sportster rear pulley on a 1987 softail to

Customer Question

Can l put a 61T sportster rear pulley on a 1987 softail to reduce vibration at 80 MPH? Softail is 97 CI 100 HP.
Submitted: 2 months ago.
Category: Motorcycle
Expert:  Steve replied 2 months ago.

the 1987 FXST has a 70T rear pulley and a 132T rear belt.

it's not a cruiser's a performance pulley.

the 1993 FLST was geared with a 61T (40237-88A) pulley and a 128T rear belt (40012-90) for highway cruising.

you WILL have to change the belt as well. there is not enough adjustment to use a 61T pulley with the stock 132T belt.

be careful what you wish for.......the FLST with the 61T pulley is a real dog. it accelerates like a Prius with a dead battery.

but it does lower the cruising rpm and, vibration at 80 mph.

I would recommend the Harley SE-4 cam as well.

let me know if you need more help.


Expert:  Steve replied 1 month ago.

let me know if you need more help.

if not, please leave a POSITIVE RATING.

thank you,