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KB PERFORMANCE PISTON KITS
Features
- These pistons were originally designed by Keith Black
- Manufactured from high-strength, T-6, heat-treated, 390 hypereutectic alloy
- Allow a tighter fit and longer piston and ring life
- Diamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005”) tolerances from piston to piston
- Each kit contains two pistons, pins, spiro-lock pin clips and Hastings moly rings
- Piston pin lock rings available separately
- Replacement rings are also available separately
- Made in the U.S.A.
Images
DS-751258
For 99-06 88” Twin Cam
| Part Number | Description | Suggested Retail |
|---|---|---|
| 0910-0575 | BORE: (3.750”) Std. - 10.5:1 Comp Piston | $208.95 |
| 0910-0578 | BORE: (3.750”) Std. - 9.25:1 Comp Piston | $203.95 |
| DS-750869 | BORE: (3.750”) Std. - Replacement Rings | $35.95 |
| 0913-0002 | BORE: (3.750”) Std. - Lock Rings - 4 pk. | $6.95 |
| DS-751277 | BORE: +.005” - 10.5:1 Comp Piston | $208.95 |
| DS-751272 | BORE: +.005” - 9.25:1 Comp Piston | $203.95 |
| DS-750870 | BORE: +.005” - Replacement Rings | $35.95 |
| 0913-0002 | BORE: +.005” - Lock Rings - 4 pk. | $6.95 |
| 0910-0576 | BORE: +.010” - 10.5:1 Comp Piston | $208.95 |
| 0910-0579 | BORE: +.010” - 9.25:1 Comp Piston | $203.95 |
| 0913-0002 | BORE: +.010” - Lock Rings - 4 pk. | $6.95 |
| 0910-0577 | BORE: +.020” - 10.5:1 Comp Piston | $208.95 |
| 0910-0580 | BORE: +.020” - 9.25:1 Comp Piston | $203.95 |
| 0913-002 | BORE: +.020” - Lock Rings - 4 pk. | Not given |
For 84-99 80” Evolution Big Twin
| Part Number | Description | Suggested Retail |
|---|---|---|
| DS-751247 | BORE: Std. (3.498”) - 10.5:1 Comp Piston | $174.95 |
| DS-751265 | BORE: Std. (3.498”) - 9.25:1 Comp Piston | $174.95 |
| DS-750830 | BORE: Std. (3.498”) - Replacement Rings | $39.95 |
| 0913-0001 | BORE: Std. (3.498”) - Lock Rings - 4 pk. | $4.95 |
| DS-751248 | BORE: +.005 - 10.5:1 Comp Piston | $174.95 |
| DS-751266 | BORE: +.005 - 9.25:1 Comp Piston | $174.95 |
| DS-751242 | BORE: +.005 - 8.5:1 Comp Piston | $165.95 |
| DS-750867 | BORE: +.005 - Replacement Rings | $39.95 |
| 0913-0001 | BORE: +.005 - Lock Rings - 4 pk. | $4.95 |
| DS-751249 | BORE: +.010 - 10.5:1 Comp Piston | $174.95 |
| DS-751267 | BORE: +.010 - 9.25:1 Comp Piston | $174.95 |
| DS-751243 | BORE: +.010 - 8.5:1 Comp Piston | $165.95 |
| DS-750831 | BORE: +.010 - Replacement Rings | $39.95 |
| 0913-0001 | BORE: +.010 - Lock Rings - 4 pk. | $4.95 |
| DS-751250 | BORE: +.020 - 10.5:1 Comp Piston | $174.95 |
| DS-751268 | BORE: +.020 - 9.25:1 Comp Piston | $174.95 |
| DS-751244 | BORE: +.020 - 8.5:1 Comp Piston | $165.95 |
| DS-750832 | BORE: +.020 - Replacement Rings | $39.95 |
| 0913-0001 | BORE: +.020 - Lock Rings - 4 pk. | $4.95 |
| DS-751251 | BORE: +.030 - 10.5:1 Comp Piston | $174.95 |
| DS-751269 | BORE: +.030 - 9.25:1 Comp Piston | $174.95 |
| DS-750833 | BORE: +.030 - Replacement Rings | $39.95 |
| 0913-0001 | BORE: +.030 - Lock Rings - 4 pk. | $4.95 |
| DS-751252 | BORE: +.040 - 10.5:1 Comp Piston | $174.95 |
| DS-750834 | BORE: +.040 - Replacement Rings | $39.95 |
| 0913-0001 | BORE: +.040 - Lock Rings - 4 pk. | $4.95 |
For 78-84 80” Shovelhead Big Twin (4.250” Stroke)
| Part Number | Description | Suggested Retail |
|---|---|---|
| DS-751258 | BORE: Std. (3.498”) - 9:1 Comp Piston | $174.95 |
| DS-751211 | BORE: Std. (3.498”) - 8.0:1 Comp Piston | $174.95 |
| DS-750830 | BORE: Std. (3.498”) - Replacement Rings | $39.95 |
| 0913-001 | BORE: Std. (3.498”) - Lock Rings - 4 pk. | Not given |
| DS-751259 | BORE: +.005 - 9:1 Comp Piston | $174.95 |
| DS-751212 | BORE: +.005 - 8.0:1 Comp Piston | $174.95 |
| DS-750867 | BORE: +.005 - Replacement Rings | $39.95 |
| 0913-001 | BORE: +.005 - Lock Rings - 4 pk. | Not given |
| DS-751260 | BORE: +.010 - 9:1 Comp Piston | $174.95 |
| DS-751213 | BORE: +.010 - 8.0:1 Comp Piston | $174.95 |
| DS-750831 | BORE: +.010 - Replacement Rings | $39.95 |
| 0913-001 | BORE: +.010 - Lock Rings - 4 pk. | Not given |
| DS-751261 | BORE: +.020 - 9:1 Comp Piston | $174.95 |
| DS-751214 | BORE: +.020 - 8.0:1 Comp Piston | $174.95 |
| DS-750832 | BORE: +.020 - Replacement Rings | $39.95 |
| 0913-001 | BORE: +.020 - Lock Rings - 4 pk. | Not given |
| DS-751262 | BORE: +.030 - 9:1 Comp Piston | $174.95 |
| DS-751215 | BORE: +.030 - 8.0:1 Comp Piston | $174.95 |
| DS-750833 | BORE: +.030 - Replacement Rings | $39.95 |
| 0913-001 | BORE: +.030 - Lock Rings - 4 pk. | Not given |
| DS-751263 | BORE: +.040 - 9:1 Comp Piston | $174.95 |
| DS-751216 | BORE: +.040 - 8.0:1 Comp Piston | $174.95 |
| DS-750834 | BORE: +.040 - Replacement Rings | $39.95 |
| 0913-001 | BORE: +.040 - Lock Rings - 4 pk. | Not given |
For 86-03 XL
| Part Number | Description | Suggested Retail |
|---|---|---|
| DS-751253 | BORE: Std. (3.498”) - 883 To 1200 Conv. (Reverse Dome) 9.0:1 Comp Piston | $174.95 |
| DS-751235 | BORE: Std. (3.498”) - 1200 XL (Flat Top) 9.0:1 Comp Piston | $160.95 |
| DS-750830 | BORE: Std. (3.498”) - Replacement Rings | $39.95 |
| 0913-001 | BORE: Std. (3.498”) - Lock Rings - 4 pk. | Not given |
| DS-751264 | BORE: +.005 - 883 To 1200 Conv. (Reverse Dome) 9.0:1 Comp Piston | $174.95 |
| DS-751236 | BORE: +.005 - 1200 XL (Flat Top) 9.0:1 Comp Piston | $160.95 |
| DS-750867 | BORE: +.005 - Replacement Rings | $39.95 |
| 0913-001 | BORE: +.005 - Lock Rings - 4 pk. | Not given |
| DS-751254 | BORE: +.010 - 883 To 1200 Conv. (Reverse Dome) 9.0:1 Comp Piston | $174.95 |
| DS-751237 | BORE: +.010 - 1200 XL (Flat Top) 9.0:1 Comp Piston | $160.95 |
| DS-750831 | BORE: +.010 - Replacement Rings | $39.95 |
| 0913-001 | BORE: +.010 - Lock Rings - 4 pk. | Not given |
| DS-751255 | BORE: +.020 - 883 To 1200 Conv. (Reverse Dome) 9.0:1 Comp Piston | $174.95 |
| DS-751238 | BORE: +.020 - 1200 XL (Flat Top) 9.0:1 Comp Piston | $160.95 |
| DS-750832 | BORE: +.020 - Replacement Rings | $39.95 |
| 0913-001 | BORE: +.020 - Lock Rings - 4 pk. | Not given |
| DS-751256 | BORE: +.030 - 883 To 1200 Conv. (Reverse Dome) 9.0:1 Comp Piston | $174.95 |
| DS-750833 | BORE: +.030 - Replacement Rings | $39.95 |
| 0913-001 | BORE: +.030 - Lock Rings - 4 pk. | Not given |
| DS-750834 | BORE: +.040 - Replacement Rings | $39.95 |
| 0913-001 | BORE: +.040 - Lock Rings - 4 pk. | Not given |
For 99-06 95” Twin Cam Big Bore
| Part Number | Description | Suggested Retail |
|---|---|---|
| DS-751286 | BORE: Std. (3.875”) - 10.5:1 Comp Piston | $217.95 |
| DS-751281 | BORE: Std. (3.875”) - 9.25:1 Comp Piston | $208.95 |
| DS-750874 | BORE: Std. (3.875”) - Replacement Rings | $44.95 |
| 0913-002 | BORE: Std. (3.875”) - Lock Rings - 4 pk. | Not given |
| DS-751287 | BORE: +.005” - 10.5:1 Comp Piston | $217.95 |
| DS-751282 | BORE: +.005” - 9.25:1 Comp Piston | $208.95 |
| DS-750875 | BORE: +.005” - Replacement Rings | $44.95 |
| 0913-002 | BORE: +.005” - Lock Rings - 4 pk. | Not given |
| DS-751288 | BORE: +.010” - 10.5:1 Comp Piston | $217.95 |
| DS-750876 | BORE: +.010” - Replacement Rings | $44.95 |
| 0913-002 | BORE: +.010” - Lock Rings - 4 pk. | Not given |
For 48-84 88” Big Bore Big Twin (3.625” Bore/4.250” Stroke)
| Part Number | Description | Suggested Retail |
|---|---|---|
| DS-751229 | BORE: Std. (3.625”) - 10:1 Comp Piston | $208.95 |
| DS-750861 | BORE: Std. (3.625”) - Replacement Rings | $19.95 |
| 0913-001 | BORE: Std. (3.625”) - Lock Rings - 4 pk. | Not given |
| DS-750862 | BORE: +.005” - Replacement Rings | $19.95 |
| 0913-001 | BORE: +.005” - Lock Rings - 4 pk. | Not given |
| DS-751231 | BORE: +.010” - 10:1 Comp Piston | $208.95 |
| DS-750863 | BORE: +.010” - Replacement Rings | $19.95 |
| 0913-001 | BORE: +.010” - Lock Rings - 4 pk. | Not given |
| DS-751232 | BORE: +.020” - 10:1 Comp Piston | $208.95 |
| DS-750864 | BORE: +.020” - Replacement Rings | $19.95 |
| 0913-001 | BORE: +.020” - Lock Rings - 4 pk. | Not given |
| DS-750865 | BORE: +.030” - Replacement Rings | $19.95 |
| 0913-001 | BORE: +.030” - Lock Rings - 4 pk. | Not given |
For 41-79 74” Knuckle, Pan and Shovelhead
| Part Number | Description | Suggested Retail |
|---|---|---|
| DS-751201 | BORE: Std. (3.438”) - 8.5:1 Comp Piston | $169.95 |
| DS-750820 | BORE: Std. (3.438”) - Replacement Rings | $38.95 |
| DS-751202 | BORE: +.005 - 8.5:1 Comp Piston | $169.95 |
| DS-750868 | BORE: +.005 - Replacement Rings | $38.95 |
| DS-751203 | BORE: +.010 - 8.5:1 Comp Piston | $169.95 |
| DS-750821 | BORE: +.010 - Replacement Rings | $38.95 |
| DS-751204 | BORE: +.020 - 8.5:1 Comp Piston | $169.95 |
| DS-750822 | BORE: +.020 - Replacement Rings | $38.95 |
| DS-751205 | BORE: +.030 - 8.5:1 Comp Piston | $169.95 |
| DS-750823 | BORE: +.030 - Replacement Rings | $38.95 |
| DS-751206 | BORE: +.040 - 8.5:1 Comp Piston | $169.95 |
| DS-750824 | BORE: +.040 - Replacement Rings | $38.95 |
| DS-751207 | BORE: +.050 - 8.5:1 Comp Piston | $169.95 |
| DS-750825 | BORE: +.050 - Replacement Rings | $38.95 |
| DS-751208 | BORE: +.060 - 8.5:1 Comp Piston | $169.95 |
| DS-750830 | BORE: +.060 - Replacement Rings | $39.95 |
| DS-750831 | BORE: +.070 - Replacement Rings | $39.95 |
| DS-750832 | BORE: +.080 - Replacement Rings | $39.95 |
For 72-85 1000 XL
| Part Number | Description | Suggested Retail |
|---|---|---|
| DS-750810 | BORE: Std. (3.188”) - Replacement Rings | $42.95 |
| 0913-001 | BORE: Std. (3.188”) - Lock Rings - 4 pk. | Not given |
| DS-751218 | BORE: +.010 - 9.0:1 Comp Piston | $190.95 |
| DS-750811 | BORE: +.010 - Replacement Rings | $42.95 |
| 0913-001 | BORE: +.010 - Lock Rings - 4 pk. | Not given |
| DS-751219 | BORE: +.020 - 9.0:1 Comp Piston | $190.95 |
| DS-750812 | BORE: +.020 - Replacement Rings | $42.95 |
| 0913-001 | BORE: +.020 - Lock Rings - 4 pk. | Not given |
| DS-751220 | BORE: +.030 - 9.0:1 Comp Piston | $190.95 |
| DS-750813 | BORE: +.030 - Replacement Rings | $42.95 |
| 0913-001 | BORE: +.030 - Lock Rings - 4 pk. | Not given |
| DS-751221 | BORE: +.040 - 9.0:1 Comp Piston | $190.95 |
| DS-750814 | BORE: +.040 - Replacement Rings | $42.95 |
| 0913-001 | BORE: +.040 - Lock Rings - 4 pk. | Not given |
| DS-751222 | BORE: +.050 - 9.0:1 Comp Piston | $190.95 |
| DS-750815 | BORE: +.050 - Replacement Rings | $42.95 |
| 0913-001 | BORE: +.050 - Lock Rings - 4 pk. | Not given |
Descriptions and notes
KB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance. Due to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation. Each replacement ring PART # denotes rings for two pistons, except 48-99 Big Bore kits and 99-06 88” Twin Cam kits, which require two sets.
This item appears on page 363 of the Fatbook