Ride Now & Pay Later with AfterPay & Zip

Free Shipping Over $50 (Excl. Heavy & Bulky Items)

  • Free shipping over $50

    Heavy & Bulky Items Excl.

  • Lowest Prices

    Exclusive Online Prices

  • Easy returns

    Quick & Hassle-Free

  • Expert Advice

    Friendly Service via Chat & Call
Save 5%
Keith Black Pistons  |  SKU: ROL-KB258.020

Keith Black Pistons KB258.020 +.020" Flat Top Pistons w/8.6:1 Compression Ratio for Big Twin 84-99 w/Evolution Engine

$414.20 $436.00
You save $21.80 (5%)
In stock9 available
  • Ready to dispatchShips Australia-wide
  • Online onlyNot sold in-store

Need a hand with this product?

Sizing, fitment or specs — our team can help.
Mon–Fri 8:30am–5pm

(07) 3216 2251 Chat now

Keith Black "Pistons BT'84-99 +.020" 8.6:1" "Flat Top" - Evo Motor" suits Harley

Product Details

Features & Benefits:-

* Bore = 3.518in.

* Stroke = 4.250in.

* Hypereutectic Alloy is a cast 16% silicon content material.

* Perfect for air cooled engines.

* Low thermal expansion rate = tighter piston-to-cylinder clearance.

* Complete kit includes: two pistons, rings, wrist pins and clips.

* Replaces OEM # 21943-83

 

Tech Tips:-

* 8.6:1 Compression Ratio with 80cc Head Chamber Volume.

* Follow Ring Eng Gap & Piston to Cylinder Clearances as per the supplied Manufacturers Instructions.

(Part Numbers: ROL-KB258.020)

Related categories

Back to top