Cylinder Works Cylinder Kit - Standard Bore - 102 mm - for Yamaha OPEN BOX [MPN: 20004-K02]

  • Cylinder Works Cylinder Kit - Standard Bore - 102 mm - for Yamaha OPEN BOX [MPN: 20004-K02]_1650524
Brand: Cylinder Works MPN: 20004-K02
$386.98
$386.98 $709.95
Est Arrival: November 6–10
Low stock

OPEN BOX RETURN. ITEM IS IN ORIGINAL PACKAGE AND INCLUDES ALL PARTS BUT PACKAGE HAS BEEN TORN OPENED. DOES NOT LOOK AS IF ANY OF THE PARTS WERE TAKEN OUT OF THE PLASTIC WRAP. ALL OPEN BOX ITEMS ARE SOLD AS-IS, NO RETURNS PLEASE!

Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the Orig. Equipment cylinders. Three kit options to choose from: Standard Bore, Standard Bore Hi-Compression and Big Bore. Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noise. Nickel Silicon Carbide plated for long life. Kits come complete with gaskets, cylinder, piston, rings, pin and clips. Big bore cylinders do not require machine work.

  • Includes cylinder, piston kit and gaskets
  • Matched with vertex pistons to ensure longevity, performance and reduce engine noise
  • Replacement piston, gaskets, and ring sets available
  • Cylinder looks just like stock
  • Nickel silicon carbide plated for longer life
  • These items are designed exclusively for closed course competition use ONLY
  • Use on public lands or highways in the state of California is illegal
Compression Ratio9,2:1
Cylinder Bore CoatingNickel-Silicon Carbide
Cylinder Diameter102.00 mm
Dimensions15 in x 10 in x 8 in
Displacement686 cc
Engine Type4-Cycle
MPN20004-K02
Overbore+0,00 mm
Product NameCylinder Kit
Product TypeEngine
Prop65See Item Description
Size102,00 mm / 102mm
StyleStandard
TypeBore Kits
UnitsKit
Weight9 lb 0 oz
Cylinder Works Cylinder Kit - Standard Bore - 102 mm - for Yamaha OPEN BOX [MPN: 20004-K02]

$386.98

FAQ

How do I tell if a part will fit my ride?

Not sure if a part fits your ride? No problem—we’ve made it easy! You’ll find a fitment tool right on every product page (and on our homepage) to help you check compatibility with your vehicle. If you’re still unsure, just reach out—we’re always happy to help you find the right fit.

Does Motomentum price match?

In many cases, yes we do! We’re all about giving you the best deal, so if you find a lower price elsewhere, let us know. You can check out all the details in our Price Match Policy.

Do you offer warranties on your products?

At Motomentum, we stand behind the products we sell because we only carry brands we trust. Most of our items are covered by the manufacturer’s warranty, but don’t worry—we’re always here to help. If you ever run into an issue, reach out to us first. We’ll gladly assist with warranty questions and help you navigate the process to make sure you’re taken care of.

What payment methods do you accept?

We accept Apple Pay, Discover, Google Pay, MasterCard, PayPal, Shop Pay, Venmo, & Visa. We also offer a "Buy Now, Pay Later" option with Shop Installments through Shop Pay.

What is your return policy?

Motomentum accepts returns within 45 days of delivery, as long as items are unused, unaltered, and in resellable condition with all original packaging, tags, accessories, and paperwork included (some exclusions apply). See our full Return Policy or start a return from your orders page.

How much is shipping?

If you’re in the continental U.S., odds are good you’re getting free shipping. And how fast is it? Most orders arrive in 2–3 days. Sometimes faster, especially if a warehouse near you is locked and loaded.

We ship most items free of charge, unless it’s the kind of thing that won’t fit in your trunk (unless you drive a box truck). Oversized stuff may cost a little extra—but we’ll always keep it real with you upfront.

Need it even quicker? At checkout, you’ll usually have 2 express options ready to go—because sometimes, you just can’t wait.

Bottom line: we want you to get your gear fast, at the best price, with no surprises. Check out our Shipping Policy to see all the details.

Can I pick my order up instead?

Absolutely! Just give us a quick shout before you order so we can double-check things for you. Since we ship from multiple locations across the country, your item might not be at our HQ—but don’t worry, that usually means it’ll reach you even faster!

How do I join the MotoMoney Loyalty Program?

It’s easy — and free! Just create a Motomentum account, and you’ll automatically be enrolled in the MotoMoney Loyalty Program. From there, you’ll start earning points on eligible purchases right away. No extra steps or sign-ups required. If you already have an account, view your Loyalty account and make sure your status is turned on (green).

How do I become a Motomentum Member?

It’s easy — and free! Head on over to our Membership page to sign up. We’ll email you all the details, plus your exclusive Motomentum Members-only coupon code.

Where can I find your discount codes and deals?

You can find all our current discount codes and deals in one handy spot right here. Check it out anytime to snag the latest savings!

To see more, visit our full list of FAQ.