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1981 Yamaha YZ465 Fuel Systems

1981 Yamaha YZ465
Tire Size:
Front: 3.00-21, Rear: 5.10-18
Spark Plug:
B8ES
Stock Chain/Belt:
520x108
Stock Gearing:
Front: 14T, Rear: 46T
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Boyesen
Power Reed
$38.95
$35.99
You save $2.96 (8%)
(5)
Boyesen Power Reed Boyesen's revolutionary dual-stage Power Reed design delivers more usable power than stock.  Your original one-stage reed operates most effectively only within a narrow RPM range. 

Latest Reviews

charlie (moncton, NB)

Fit
Finish
Durability
Features
Cost Benefit

boyesen pro series reed Rm 250 - 2003

The pro series works great. It took away a little bottom end power but I adjusted my power valve and dang this thing boogies. Great product.

Bryan (Slaton , TX)

Fit
Finish
Durability
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Cost Benefit

Torque!

Improved hole shots, cornering and midrange. Didn't lose any top end but not sure we gained any either. Tons of low and midrange improvements. Installed in 30 minutes. Well worth it!

Tyler (centennial , CO)

Fit
Quality
Installation
Recommend

horrible quality

Both the pilot jet and main jet that comes in the kit snapped when very little pressure was applied. Looks like they are made of a soft composite material on the inside painted to look like brass.

Brian (Seattle, WA)

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Finish
Durability
Features
Cost Benefit

Klx250

Super straight forward and easy to install. Combined with filter and pipe, turns the bike into a proper moto.

Mike (Loxahatchee, FL)

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Finish
Durability
Features
Cost Benefit

Dynojet stage one

I have a 2009 YZ250F. I installed a complete FMF exhaust and the bike just wasn't right. After installing the Dynojet Kit my bike acted like another bike. The jet kit woke my bike up. Thanks.

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