Best in 7 days
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Description
18x23x22 ProX small little end / wrist pin bearing Yamaha YZ250 1983-1998 / Suzuki RM250 1977-2012 / RMX250 21.3303Made in Japan Part # 21. 3303 Size: 18 x 23 x 22 mm Features: Manufactured by leading Japanese OEM factories. Designed to exact OEM specifications to be a direct and cost efficient OEM replacement. Fitment: MAKE MODEL YEAR YAMAHA YZ 250 1983 1998 YAMAHA WR250 1988 1997 SUZUKI RM250 1977 2012 SUZUKI RM X250 1987 2000 ProX offers a complete line of piston pin bearings for the Dirtbike, ATV, PWC and 50cc scooter segment. The pistons pin bearings are
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- Free Standard Shipping on $100+ Orders to the USA.
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.7 ★★★★★
Based on 2126 reviews
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Product Reviews
★★★★★ 3
Too large
Size: Medium, Color: Burgundy,lake Blue,dazzling Blue,bijou Blue
Nice but medium size was just too large. Suggest ordering one size smaller.
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Reviewed in the United States on February 20, 2026
★★★★★ 5
quality fabric and custom fit
Size: Large, Color: Cerise,orange,yellow,light Blue
excellent fit and fabric. This is my second order of this product
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Reviewed in the United States on February 25, 2026
★★★★★ 5
Good fitting support !
Size: Medium, Color: White
Just what the man needed. Very good contoured support. No jostling. Not a loose potato sack after an hour of wearing this. Highly recommended. Compare? Hanes, for example. Even the Jockey brand. Put those on, they're tight fitting, seemingly supportive. But they're not. They aren't contoured to fit. That's the whole idea. Contoured, to fit. And stay fitted. The trunk type, just like this wirarpa, and in half an hour it's loose loose loose fitting. A potato sack. No support. No support at all. That's not what a trunk brief is supposed to do. It's supposed to support, give comfort and confidence, stay in place feeling. Assuredness. And this wirarpa Mens Trunk does the job ! Wash and wear and wash and wear. Stays in shape, never gets stretched out and loose, for the fit.
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Reviewed in the United States on May 29, 2024
★★★★★ 5
Comfortable & well-fitting, but some differences in stiffness between batches
Size: Medium, Color: Black/Deep Blue/Deep Grey/Heather Grey
I've basically been exclusively buying these since I've discovered them. Super-comfortable and maintain their shape for a long time, but I've noticed from buying it multiple times that sometimes the pouch area has stiffer texture and more support than other times (when it's loose & stretchy like the rest of it). I wish I could specify receiving the more-supported ones because they tend to produce less....how to say, knocking the boys around.
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Reviewed in the United States on March 22, 2026
★★★★★ 5
Comfort and softness
Size: 3X-Large, Color: Black/Navy/Dark Grey/Red
True to size; they are comfortable, good quality, and really soft.
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Reviewed in the United States on January 3, 2026
