SKU: 16036678161

Bel-Ray - Thumper Racing Synthetic 10W-40 4-Stroke Engine Oil

$11.65 $12.95
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Ships within 48 hours · Estimated delivery Jul 13 - Jul 18

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Description

Bel-Ray - Thumper Racing Synthetic 10W-40 4-Stroke Engine OilBel Ray Thumper Racing Synthetic 10W 40 4 Stroke Engine Oil Bel Ray Thumper Racing Synthetic 10W 40 4 Stroke Engine Oil is built for the high revving world of modern thumpers single cylinder, multi valve 4 stroke engines that live at the limit. This ester blend racing oil combines premium synthetic esters with refined mineral base oils to deliver strong film strength, reduced friction, and outstanding heat stability. Its designed to keep valve trains,

Bel-Ray - Thumper Racing Synthetic 10W-40 4-Stroke Engine Oil

Bel-Ray Thumper Racing Synthetic 10W-40 4-Stroke Engine Oil is built for the high-revving world of modern thumpers — single-cylinder, multi-valve 4-stroke engines that live at the limit. This ester-blend racing oil combines premium synthetic esters with refined mineral base oils to deliver strong film strength, reduced friction, and outstanding heat stability. It’s designed to keep valve-trains, rings, and pistons protected under the kind of abuse only a hard-running four-stroke can deliver.

Why we like it:

it keeps performance consistent from the first lap to the last. The formula provides smooth, predictable clutch engagement and helps extract every bit of horsepower while minimizing wear. It’s clean-running, reliable, and specifically tuned for the demands of racing and aggressive off-road use.

Why it’ll work for you:

it meets API SN and JASO MA2 standards, making it perfect for both air- and liquid-cooled 4-stroke engines with wet clutches. The ester blend chemistry delivers strong protection against heat and friction while maintaining clutch feel and throttle response. If you ride a 250F, 450F, or any big-bore single that gets worked hard, Bel-Ray Thumper Racing Oil keeps your motor safe, smooth, and ready for more.

Key Features:

  • Combines high quality synthetic esters & highly refined mineral base oils with premium additives
  • Formulated for single-cylinder multi-valve off-road & racing motorcycle & ATV engines
  • Provides great anti-wear protection for valve-trains, rings, cylinders & pistons
  • Extreme pressure additives to offer smoother shifting
  • Maximum horsepower & consistent clutch performance
  • Withstands extreme racing conditions
  • Wear protection for valve-trains, rings, cylinders, and pistons
  • For riders changing their oil 2-4 hours (mx bikes) or 3500-4000 miles (dual sport)

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 16036678161

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4.7 ★★★★★
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GrandmaJeanie
West Palm Beach, US
★★★★★ 4
Shipped quickly and as described
It was what I expected as functionality, lightweight and easy to move about. I plan to use it in my enclosed patio to obscure weight bench and wts. My only complaint is that the bamboo cover on one edge is not secure. But I will probably use a magic marker to cover the natural back that is showing. I don’t have time to return it as my event is coming soon.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 3, 2025
J
Verified Purchase
Jaime Colombani
Pawtucket, US
★★★★★ 5
Good product, needs double hinges for versatility.
Size: 6 Panel, Color: Brown
Blocks out all the light, looks good, good color. Only con is that it is not double hinged so it is hard to position the extra panels because I bout 6 panels instead of the 4 I usually get. Good deal, very decent price with the free delivery. Very clean packaging, came in great shape, no smell or odor from the factory.
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Reviewed in the United States on September 9, 2025
A
Verified Purchase
Anne
Waukegan, US
★★★★★ 5
Very Pleased with Room Divider
Size: 4 Panel, Color: Brown
This room divider is even better than I expected. It's sturdy but is lightweight enough that I could get the box up a flight of stairs with no problem whatsoever. It folds and unfolds easily and is very easy to move. And there's no assembly required! It really is woven and is quite attractive. The main reason I chose this item was price (although I did like the way it looked) and I got more for my money than I thought I would.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 13, 2025
T
Verified Purchase
The Maschmo
Birmingham, US
★★★★★ 5
Works well
Size: 4 Panel, Color: Coal Black
i bought this for 3 reasons. 1. Privacy when changing so I don't have to lock dog out of room. 2. In case MIL comes over and wants to snoop. She won't be able to see my bedroom. 3. A nice backdrop to use when taking photos of the clothing I make. This is perfect for me. My only "complaint" is that it is not the most sturdy thing. I have to finagle it in a way that keeps it from falling over. But for the price, it can't be beat!
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Reviewed in the United States on March 18, 2026
S
Verified Purchase
Sebastian Monte
Waukegan, US
★★★★★ 3
Cheap and unstable
Size: 4 Panel, Color: Black, Size: 4 Panel, Color: Black
Although this has nothing to do with the product, it arrived a day later than previously stated. Making me have to create a makeshift room divider the day it was actually needed. When the product arrived it arrived in a box that showed no evidence of damage. Once opened, divider was found inside a plastic cover. Great protector for dust or scratching. The divider was fully assembled so there was nothing for me to do but remove it from packaging and use it where needed. After further inspection the divider was not only cheap and flimsy looking it was absolutely unstable. It would wobble and appears to have been assembled in a rush making some panels crooked. I noted significant damage to the bottom portion of some of the panels both front and back. It does not feel like an item worth the price. The color is as advertised and the product had no smell. The sizing was accurate.
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Reviewed in the United States on January 17, 2025

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