The Heavy Hitter Ultra Bee Racing Linkage is a 7075-T6 aluminum rear shock linkage from Heavy Hitter, sold by GritShift, for the Sur Ron Ultra Bee. It runs on stainless steel bearing sleeves and five needle bearings, seals them with press-fit nylon bearing seals, and is thickened locally at critical areas in a black anodized finish.
Specs verified September 2026 against the live GritShift product page and the Heavy Hitter assembly tech sheet.
Specifications
| Material | 7075-T6 aluminum |
|---|---|
| Finish | Black anodized |
| Weight | 0.9 lb |
| Bearing sleeves | Stainless steel, for increased strength and long-term wear resistance |
| Bearings | 3× HK1516 needle bearings and 2× HK1512 needle bearings |
| Bushings | 4× top bushings and 2× lower bushings |
| Seals | Press-fit nylon bearing seals for water ingress protection |
| Bearing interface | No bushing drag on the sleeve |
| Construction | Localized thickening in critical areas for maximum strength without unnecessary weight |
| Grease | Red assembly grease; bearings must be greased before riding |
| Re-grease interval | Every 15 to 25 hours of use under normal conditions; every 5 to 10 hours if the bike is pressure washed or raced in mud |
| Mounting hardware | Not included; reuses the OEM linkage bolts |
What bikes does the Heavy Hitter Ultra Bee Racing Linkage fit?
- Sur Ron Ultra Bee
Why upgrade the Ultra Bee linkage?
The Heavy Hitter linkage is engineered to optimize the Ultra Bee’s rear suspension for improved off-road handling. Stainless steel bearing sleeves add strength and wear resistance, press-fit nylon seals keep water out of the bearings, the sleeve runs without bushing drag, and the 7075-T6 body is thickened only where loads concentrate so strength goes up without unnecessary weight.
What is in the box?
- 1× linkage
- 1× bottom sleeve, 1× center sleeve and 1× top sleeve
- 4× top bushings
- 2× lower bushings
- 3× HK1516 needle bearings
- 2× HK1512 needle bearings
Mounting bolts are not included; the linkage reuses the OEM linkage bolts already on the bike.
How do I install and maintain it?
Grease the bearings with red assembly grease before riding. Re-grease every 15 to 25 hours of use under normal conditions, or every 5 to 10 hours if the bike is pressure washed or raced in muddy conditions. The assembly guide is the Heavy Hitter Ultra Bee Racing Linkage tech sheet (PDF).
Where can I get it?
The Heavy Hitter Ultra Bee Racing Linkage is made by Heavy Hitter and sold by GritShift.
