Availability Bob's Space Racers Boards x 2 Pair of two boards $75.00 Qty: Add to cart Email a friend Question about product? Add to wishlist Details Pair of Bob's Space Racers circuit boards. We don't do too much about these boards, they are both very clean, one appears to be a relay board, the other a small CPU board. Original Part # BSR2300 Rev. D and BSR1110. Items are untested and sold as-is, see photos for more details on its condition.