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Ships within 48 hours · Estimated delivery Aug 29 - Sep 3
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Description
Tekno 21T Mod1 Hardened 5mm bore Pinion Gear TKR4181The new line of Tekno RC M5 Pinion Gears stand out from the rest. These are the ultimate pinions for 1 8th Electric and any other MOD1 pinion application. Sized from 11t all the way to 30t, you are sure to find the right gear ratio for racing or those insane speed runs. The M5 set screw ensures that your gear will stay put during operation and ensure you wont strip it out when you need to remove it. The gears are CNC machined, lightened, then hardened
The new line of Tekno RC M5 Pinion Gears stand out from the rest. These are the ultimate pinions for 1/8th Electric and any other MOD1 pinion application. Sized from 11t all the way to 30t, you are sure to find the right gear ratio for racing or those insane speed runs. The M5 set screw ensures that your gear will stay put during operation and ensure you won’t strip it out when you need to remove it. The gears are CNC machined, lightened, then hardened for incredible durability. A laser etched size identification finishes it off.Features:
- Massive M5 set screw grips better and won’t strip out
- Precisely machined and lightened for quiet and efficient operation
- Laser etched for easy identification
- Hardened steel construction
- MOD1 pitch, 5mm bore, standard length shank
- 11t -> 30t sizes for any application
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.4 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
Best shirts
Color: Light Blue, Size: Large
Great shirts, great price, modern soft/lightweight fabrics with a vintage look. Perfect.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Soft fabric
Color: 1-navy Blue, Size: X-Large
My husband loves this shirt and he is picky about comfort. He likes the soft light weight fabric and comfortable fit.
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Reviewed in the United States on June 5, 2026
★★★★★ 5
Style, Coolness, Comfort
Color: Light Green, Size: Large
My son who is 44, loves them. He loves comfort in a shirt, and coolness. These shirts have got it. Multiple colors. Good price.
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Reviewed in the United States on April 24, 2026
★★★★★ 4
Comfortable, a bit tall
Color: Dark Blue, Size: X-Large
Great shirt, very comfortable. It's a little tall/long, so 4 not 5 star. I'm going to shop around for different brands, but this will be my fallback because it mostly works for me.
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Reviewed in the United States on April 13, 2026
★★★★★ 5
Good quality
Color: All Black, Size: XX-Large
Bought for my husband fits great. Soft and stretchy. Good quality and good thickness to stay cool.
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Reviewed in the United States on May 6, 2026