YearMakeModelSubmodel

Picture 1 of 3

Namura Technologies NA-50003-2K Piston Kit 0.50mm Oversize to 74.97mm 186-50032 - Picture 1 of 3

Namura Technologies NA-50003-2K Piston Kit 0.50mm Oversize to 74.97mm 186-50032 - Picture 2 of 3

Namura Technologies NA-50003-2K Piston Kit 0.50mm Oversize to 74.97mm 186-50032 - Picture 3 of 3

Namura Technologies - NA-50003-2K - Top End Repair Kit, 0.50mm Oversize to 74.97mm

5.02 product ratings

OEM Cycle Shop (579008)

99% positive feedback

Price:

$85.97

Free shipping

Estimated delivery Thu, Aug 21 - Mon, Aug 25

Ships today if you order in the next Ships today if you order in the next 1h 40m

Returns:

30 days returns. Seller pays for return shipping.

Condition:

New

Sizing : 0.50mm Oversize. Machined Smooth Heads Reflects combustion heat and reduces carbon buildup, protecting the top of the piston. 75.00mm Top End Kit. Benefits include increased heat transfer, reduced friction and helping to eliminate cold seizures.

About this product

Product Identifiers

BrandNamura Technologies

Manufacturer Part NumberNA-50003-2K

eBay Product ID (ePID)209949599

Additional Product Features

Part TypeTop End Repair Kit

All listings for this product

Namura Technologies NA-50003-2K Piston Kit 0.50mm Oversize to 74.97mm 186-50032

item 1 Namura Technologies NA-50003-2K Piston Kit 0.50mm Oversize to 74.97mm 186-50032

Namura Top End Repair Kit +0.50mm 74.97mm Polaris Xplorer 300/Xpress 300

item 2 Namura Top End Repair Kit +0.50mm 74.97mm Polaris Xplorer 300/Xpress 300

1996-1999 POLARIS 300 XPLORER Namura Top End Repair Kit Polaris .020 NA-50003-2K

item 3 1996-1999 POLARIS 300 XPLORER Namura Top End Repair Kit Polaris .020 NA-50003-2K

Namura Technologies NA-50003-2K Namura Top End Repair Kit Polaris .020

item 4 Namura Technologies NA-50003-2K Namura Top End Repair Kit Polaris .020

Namura .020 Over Bore Top End Repair Kit for Polaris 300 2-Stroke ATV's 75mm

item 5 Namura .020 Over Bore Top End Repair Kit for Polaris 300 2-Stroke ATV's 75mm

Namura Top End Repair Kit NA-50003-2K

item 6 Namura Top End Repair Kit NA-50003-2K

Namura Piston Kit 0.50mm Oversize to 74.97mm NA-50003-2K

item 7 Namura Piston Kit 0.50mm Oversize to 74.97mm NA-50003-2K

Namura Piston Kit 0.50mm Oversize to 74.97mm NA-50003-2K

item 8 Namura Piston Kit 0.50mm Oversize to 74.97mm NA-50003-2K

Namura Piston Kit 0.50mm Oversize to 74.97mm #NA-50003-2K

item 9 Namura Piston Kit 0.50mm Oversize to 74.97mm #NA-50003-2K

Namura NA-50003-2K Top End Repair Kit for Engine Pistons Piston Kits fh

item 10 Namura NA-50003-2K Top End Repair Kit for Engine Pistons Piston Kits fh

NA-50003-2K NAMURA TOP END REPAIR KIT POLARIS .020

item 11 NA-50003-2K NAMURA TOP END REPAIR KIT POLARIS .020

NA-50003-2K 1994-1999 POLARIS ATV 300L NAMURA TOP END REPAIR KIT POLARIS .020

item 12 NA-50003-2K 1994-1999 POLARIS ATV 300L NAMURA TOP END REPAIR KIT POLARIS .020

Namura Top End Repair Kit - 0.50mm Oversize to 74.97mm - NA-50003-2K

item 13 Namura Top End Repair Kit - 0.50mm Oversize to 74.97mm - NA-50003-2K

Namura NA-50003-2K 0.50mm Oversize 74.97mm Piston Top End Repair Kit Polaris 300

item 14 Namura NA-50003-2K 0.50mm Oversize 74.97mm Piston Top End Repair Kit Polaris 300

Namura Piston Kit 0.50mm Oversize to 74.97mm NA-50003-2K

item 15 Namura Piston Kit 0.50mm Oversize to 74.97mm NA-50003-2K

Namura NA-50003-2K Piston Kit 0.50mm Oversize to 74.97mm

item 16 Namura NA-50003-2K Piston Kit 0.50mm Oversize to 74.97mm

Namura NA-50003-2K Top End Repair Kit for Polaris .020

item 17 Namura NA-50003-2K Top End Repair Kit for Polaris .020

Namura-Top End Repair Kit-for Polaris-Xpress 300

item 18 Namura-Top End Repair Kit-for Polaris-Xpress 300

Namura +0.50mm Top End Kit NA-50003-2K for Big Boss Xplorer Xpress 300 94-00

item 19 Namura +0.50mm Top End Kit NA-50003-2K for Big Boss Xplorer Xpress 300 94-00

Namura Top End Repair Kit for Polaris .020 | NA-50003-2K

item 20 Namura Top End Repair Kit for Polaris .020 | NA-50003-2K

Namura Technologies NA-50003-2K Top End Repair Kit - 0.50mm Oversize to 74.97mm

item 21 Namura Technologies NA-50003-2K Top End Repair Kit - 0.50mm Oversize to 74.97mm

Namura Top End Repair Kit, 0.50mm Oversize to 74.97mm | NA-50003-2K

item 22 Namura Top End Repair Kit, 0.50mm Oversize to 74.97mm | NA-50003-2K

Namura Piston Kit 0.50mm Oversize to 74.97mm NA-50003-2K

item 23 Namura Piston Kit 0.50mm Oversize to 74.97mm NA-50003-2K

Namura Top-End Rebuild Kit for Polaris 300 Models - 74.97mm NA-50003-2K

item 24 Namura Top-End Rebuild Kit for Polaris 300 Models - 74.97mm NA-50003-2K

NAMURA NAMURA TOP END REPAIR KIT POLARIS .020 NA-50003-2K

item 25 NAMURA NAMURA TOP END REPAIR KIT POLARIS .020 NA-50003-2K

Namura Piston Kit 0.50mm Oversize to 74.97mm NA-50003-2K

item 26 Namura Piston Kit 0.50mm Oversize to 74.97mm NA-50003-2K

Namura Top End Repair Kit, 0.50Mm Oversize To 74.97Mm Na-50003-2K NA-50003-2K

item 27 Namura Top End Repair Kit, 0.50Mm Oversize To 74.97Mm Na-50003-2K NA-50003-2K

Namura Piston Kit 0.50mm Oversize to 74.97mm NA-50003-2K

item 28 Namura Piston Kit 0.50mm Oversize to 74.97mm NA-50003-2K

Namura top end repair kit _NA-50003-2K

item 29 Namura top end repair kit _NA-50003-2K

Namura Top End Repair Kit - NA-50003-2K

item 30 Namura Top End Repair Kit - NA-50003-2K

NAMURA NA-50003-2K TOP END KIT TWO STROKE 74.97/+0.50 POL

item 31 NAMURA NA-50003-2K TOP END KIT TWO STROKE 74.97/+0.50 POL

NAMURA TOP END REPAIR KIT NA-50003-2K

item 32 NAMURA TOP END REPAIR KIT NA-50003-2K

NAMURA 1996-1999 Xpress 300 Polaris TOP END KIT TWO STROKE 74.97/+0.50 POL NA-50

item 33 NAMURA 1996-1999 Xpress 300 Polaris TOP END KIT TWO STROKE 74.97/+0.50 POL NA-50

NAMURA 1996-1999 Xplorer 300 4X4 Polaris TOP END KIT TWO STROKE 74.97/+0.50 POL

item 34 NAMURA 1996-1999 Xplorer 300 4X4 Polaris TOP END KIT TWO STROKE 74.97/+0.50 POL

Namura Top End Repair Piston Kit .5mm Oversize, 74.97mm Bore Polaris NA-50003-2K

item 35 Namura Top End Repair Piston Kit .5mm Oversize, 74.97mm Bore Polaris NA-50003-2K

96-'99 for Polaris Xplorer 300 4X4 NAMURA Top End Kit Two Stroke 74.97/+0.50 Pol

item 36 96-'99 for Polaris Xplorer 300 4X4 NAMURA Top End Kit Two Stroke 74.97/+0.50 Pol

Namura Piston Kit NA-50003-2K

item 37 Namura Piston Kit NA-50003-2K

Namura 186-50032 NA-50003-2K TOP END KIT TWO STROKE 74.97/+0.50 POL

item 38 Namura 186-50032 NA-50003-2K TOP END KIT TWO STROKE 74.97/+0.50 POL

Namura Piston Kit 0.50mm Oversize to 74.97mm NA-50003-2K

item 39 Namura Piston Kit 0.50mm Oversize to 74.97mm NA-50003-2K

Top End & Piston TWO STROKE 74.97/+0.50 Polaris Xpress 300 Xplorer 300 4X4

item 40 Top End & Piston TWO STROKE 74.97/+0.50 Polaris Xpress 300 Xplorer 300 4X4

+$15.00 shipping

Namura Top End Kit Two Stroke 74.97/+0.50 Pol Na-50003-2K

item 41 Namura Top End Kit Two Stroke 74.97/+0.50 Pol Na-50003-2K

+$18.00 shipping

listings for this product

Ratings and Reviews

5.0

2 product ratings

2 users rated this 5 out of 5 stars
0 users rated this 4 out of 5 stars
0 users rated this 3 out of 5 stars
0 users rated this 2 out of 5 stars
0 users rated this 1 out of 5 stars

Most relevant reviews

by maxr1980
Jun 03, 2025
Perfect fit and the instructions were ve...
Perfect fit and the instructions were very clear and easy to understand for the break in process.
Verified purchase: YesCondition: New
by vettemanz51
Sep 07, 2019
Good deal
Worked perfect
Verified purchase: YesCondition: New

Best Selling in Engine Rebuild Kits & Components

Save on Engine Rebuild Kits & Components

You may also like