Speed And Science

10/20/2026

"When your billet V-Twin has more power than gravity can handle".....

10/15/2026

Time flies by - 10 years ago, this was but a dream!
Since the humble beginnings, we've built a nice product line, designed for people who want only the best.
We are so proud to know that Speed And Science parts are being enjoyed all over the world!
We couldn't do that without Your support, so please accept the well deserved Thank YOU!.......

10/08/2026

South paws matter!!!.....
EDIT: some of the comments are priceless, PLEASE!! keep 'em coming! 😅.....

10/01/2026

20sec of major sonic disturbance.
*** AI is for wimps, this is real stuff!
🦾 🔥 👌 👍......

09/25/2026

Quintessential Happy Friday pic?
Maybe. But imagine opening a box containing these pieces.....

09/23/2026

Let's hope, this one sticks for a while...
Thank y'all for your patience 👍......

09/15/2026

Watch the video please - twice. Good answers to the old question.

09/10/2026

"What cam should I use on my build?" - we hear this question all the time.
Our standard answer: "It depends."
But there's a very good chance that a Leineweber cam will make you smile. Just saying!

Caution!!

May cause intense fun, arms pulling off the handlebars, lack of rear tire tread.

L51- Pan/Shovel cam for 90"+ engines, pairs well with Speed and Science heads, hydraulic lifters.
Complimented by clean fuel and air!

06/23/2026

Shovelhead candy.
Share away! 🤟......